List of Irish clans
The following is a list of Irish clans.
Uí Fiachrach Dynasty
- Clan name (Tuath): Uí Fiachrach
- Progenitor: Fiachrae m. Eochaid Mugmedon m. Muiredach Tirech m. Fíacha Sroiptine m. Cairbre Lifechair m. Cormac mac Airt m. Art mac Cuinn m. Conn of the Hundred Battles m. Fedlimid Rechtmar m. Túathal Techtmar m. Fíachu Finnolach m. Feradach Finnfechtnach m. Crimthann Nia Náir m. Lugaid Riab nDerg m. The Findemna, et cetera
- Septs (finte): Uí Cleirigh (O'Cleary), Ó hEidhin (Hynes), Ó Dubhda (Dowd), Uí Flaithbheartaigh (O'Flaherty), Uí Raghallaigh (O'Reilly), Uí Ruairc (O'Rourke), Uí Sheachnasaigh (O'Shaughnessy)
- Location Kingdom of Connacht
Clann Néill (also Clan Neill)
- Clan name (Tuath): Clann Néill (also Clan Neill)
- Progenitor: Niall Caille
- Hereditary Chief or Clan chief: Ó Néill Mór (O'Neill)
- Septs (finte): Mac Lochlainn (McLaughlin), Mac Bearáin (Barron), Mac Seáin (McShane or Johnson), Mac Suibhne (MacSweeney, MacSwyn, Swain, Swine), Ó Doibhlín (Devlin Swordbearer to O'Neill), Mac Giolla Easbaig (Gillespie, MacAnaspie, Bishop), Mac Íomhair (MacIver, MacKeever, MacUre, Orr), Mac Ladhmainn (MacClement, Lamond, Lymon, MacLamont or Clements), Mac Conmidhe (MacNamee, MacConamy, MacMeadh, Mee), Mac Néill (Mac Niall), Mac Eoghain (MacKean, MacKeon), The O'Higgins family (of Ballynary)
- Location - county, barony or townland: County Tyrone
- Cinéal (Kinship): Cenél nEógain
- Branches: Uí Néill Ruadh (Ó Néill Mór), Clann Áodh Búidhe.
Clann Domhnaill
- Clan name (Tuath): Clann Domhnaill
- Progenitor: Domnaill m. Muircherdaich m. Muiredaich m. Éogain m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Ó Donngaile Mór, Chief of Ballydonnelly, Hereditary Marshal of Ulster (O'Donnelly)
- Septs (finte): Ua [Fh]laithbheartaigh (Flaherty, Flaverty, Laverty, Lafferty)
- Location - county, barony or townland: Ballydonnelly, County Tyrone
- Cinéal (Kinship): Cenél nEógain
- Branches:
Muintír-Birn
- Clan name (Tuath): Muintír-Birn
- Progenitor: Birnn m. Ruadrach m. Murchada m. Máel Dúin m. Áeda Alláin
- Hereditary Chief or Clan chief: Mac Ruaidhrí (MacRory, [Mac]Rogers)
- Septs (finte): Mac Murchadha (MacMorrow, Morrow, Murrow, Murphy, MacMurphy, Morrowson)
- Location - county, barony or townland: Strabane (upper)
- Cinéal (Kinship): Cenél nEógain
- Branches: Tellach Ainbhith
Cenél Fergusa
- Clan name (Tuath): Cenél Fergusa
- Progenitor: Fergusa m. Éogain m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Ua hÓgáin ('O'Hagan')
- Septs (finte): O'Quinns, Ua Mael Fhabaill (Mulfoyle, et al.) and O'Mallons (O'Mellans)
- Location - county, barony or townland: Dungannon (Upper)
- Cinéal (Kinship): Cenél nEógain
Cairrge Brachaidhe
- Clan name (Tuath): Cairrge Brachaidhe
- Progenitor: Brachaidi Mac Diarmada
- Hereditary Chief or Clan chief: Ua Maol Fhábhaill (Mulfaal, Mulfavil, MacFael, Mulfoyle or Mac Paul)
- Septs (finte): Carrichbrack (Carrickbraghy) in the barony of Inishowen West, County Donegal.
- Cinéal (Kinship): Cenél nEógain
Cenél mBinnigh
- Clan name (Tuath): Cenél mBinnigh
- Progenitor: Eochach Binnich m. Éogain m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Ua hAghmaill (O'Hamill), Teallach Duibhbrailbe
- Septs (finte): Ua Brolaigh, herenaghs of Tech na Coimairce and Clonleigh
- Location - county, barony or townland: Glenconkeine, barony of Loughinsholin
- Cinéal (Kinship): Cenél nEógain
- Branches: *Cenél mBinnig Glinne *Cenél mBindigh Locha Droichid (east of Magh Ith in Tirone) *Cenél mBindigh Tuaithe Rois (east of the Foyle) and one branch of the Ua Brolaigh
Cenél Moen
- Clan name (Tuath): Cenél Moen
- Progenitor: Maein m. Muireadaigh m. Éogain m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Ó Gairmleadhaigh (O'Gormley)
- Septs (finte): O Duineachaidh, Ó Croidheáin (O Crean), Ó Lúinigh (O Lunny), O'Tierney (Ó Tiarnaigh), O'Kelly (Ó Ceallaigh), O'Cernaghan (Ó Cearnacháin), O'Garvey (Ó Gairbhith), MacDonaghy (Mac Donncha), Ó Peatáin (O'Patton or Peyton) and Ó Luinigh (or O'Loony)
- Location - county, barony or townland: Magh Itha in the barony of Raphoe, County Donegal
- Cinéal (Kinship): Cenél nEógain
Cenél Fearadhaigh
- Clan name (Tuath): Cenél Fearadhaigh
- Progenitor: Feradaich m. Éogain m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Mac Cathmhaoil
- Septs: McCaul, Mac an tSaoir (McIntyre, McAteer, Wright), McGilbride, O'Bradley, McDonald, McAlister, McSorley, , McGilchrist, McAleese, McFarland, McGivern, McConnell, McDaniel, McDonnell, McIver O'Mulpatrick
- Location - county, barony or townland: Clogher, County Tyrone
- Cinéal (Kinship): Cenél nEógain
- Branches: Mac Fiachra sept (MacKeaghery)
Cenél Tigernaich
- Clan name (Tuath): Cenél Tigernaich
- Progenitor: Tighearnach m. Muireadaigh m. Éogain m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Ó Maolfothartaigh (O'Mulfoharty), and Ó hEodhasa (O'Hosey)
- Location - county, barony or townland: County Tyrone
- Cinéal (Kinship): Cenél nEógain
Clan Conchobhair
- Clan name (Tuath): Clan Conchobhair
- Progenitor: Conchobhar m. Fearghaile m. Maol Dúin m. Maol Fithrich m. Aodha Uairidnaigh
- Hereditary Chief or Clan chief: Ó Cathain (O'Kane, Ó'Cahan)
- Septs (finte): O'Maoláin (O'or McMullan), Mac Bloscaidh (MacCloskey)
- Location - county, barony or townland: lords of Creeve (Coleraine area, County Londonderry) and Keenaght
- Cinéal (Kinship): Cenél nEógain
- Branches: Clan Drugain
Clan Drugain
- Clan name (Tuath): Clan Drugain
- Progenitor:
- Hereditary Chief or Clan chief: Ó Cathain (O'Kane, Ó'Cahan)
- Septs (finte): O'Maoláin (O'or McMullan), Mac Bloscaidh (MacCloskey), Mac Auslain (MacCausland, Scotland), Mac Aibhne (MacEvany, MacAVENUE, MacAvinney, MacAvinny, MacEvanny), Mac Einrí (Henry), Ó Maoilmheana (Mulvaney, Mulvane, Mulvany), Ó Maoilmhíchíl (Mulmeel), Ó Muireadhaigh (Murray, Morie), Ó Cuaig (Quigg Fivey, Kegg, Quig), Ó Cuinn (Quinn, Quin, Qwin), Ó Tanaidhe (Tanny, Tannay, Tanney, Tannie, Taney), Mac Bháltair (MacWhirter, Scotland).
- Location - county, barony or townland: lords of Creeve (Coleraine area, County Londonderry) and Keenaght
- Cinéal (Kinship): Cenél nEógain
Clan Diarmatta (also Clandermot)
- Clan name (Tuath): Clan Diarmatta (also Clandermot)
- Progenitor: Cearallán m. Baoighill m. Diarmada m. Conchobhair m. Fearghaile m. Maol Dúin m. Maol Fithrich m. Aodha Uaridnaich
- Hereditary Chief or Clan chief: Ó Cairealláin, (O'Carolan)
- Septs (finte): Mac Ettigan (Mac Eitigen)
- Location - county, barony or townland: The parish of Clondermot in County Londonderry
- Cinéal (Kinship): Cenél nEógain
- Branches: Tealach Braonáin (Magettigan)
Cenél Aonghusa
- Clan name (Tuath): Cenél Aonghusa
- Progenitor: According to the O Clery Book of Genealogies, M. 790, lines 714 to 718 (Linea Antiqua, Royal Irish Academy MS 23D17, circa 1642), Eógan mac Niall's sons first conquered and held territory in the Bredach in Inishowen. They are enumerated in the following manner:
It e annso tellaighe na Bredchha
714. O Fheidlimid, cedus, muinter Ruarcan et muinter Treallan et muinter Slebhin et muinter Muirdelbaigh et clann Cumuscaigh et clann Narchon c: teallach Tuathail et clann Forcheirnn.
715. O Corbmac, uero, muinter Chele, ocus clann Minghoile, ocus clann Cerdan, ocus .h. Mail, et .h. Ultain et .h. Ruaigne.
716. O Dallan, .h. Eircinn, ocus .h. Cuiliun et .h. Reodan, .h. Ceallaigh, .h. Meran, ocus clann Cuan.
717. O Oilill, muinter Forceallaigh et muinter Mail raifthi, ocus .h. Rosaigh et .h. Gillagan, .h. Donnan, .h. Corpmaic, ocus sil meic Gluais, .h. Follamain, .h. Minain, .h. Uidir, .h. Fercumais,.h. Galan, .h. Donnugan uel .h. Branugan, .h. Ceallaigh, .h. Duibne et clann Filgaile.
718. O Oenghus, .h. Mail phoil, ocus .h. Brolaigh et cenel Oenghusa tulcha og (.i. mic Aini et mic Ecruiti). Et asd e an t-Aenghus sin do-choidh in echtra co righ Temra co nderna a muinerus fris, ocus cor fer comlann tar a chenn .i. cath mullaig Fedha et ba coimdith don chath, ocus d'Aenghus cor gair a cu .i. guan ar na cengal do chloich an atha co tainic ba guth an tigerna an cu .i. goan co ro-muigh an cath iertain co tucadh crich imdha, ocus erannus do, cor dhedhail da seacht macaib iertain; mac do, Echrach o tait clann Aenghusa eachrach i nn-ibh Uais breagh; mac ele do a crich fer Cul re Tulen atuaidh o ta clann Aenghusa cul et alii multi.
- Location - county, barony or townland: County Tyrone
- Cinéal (Kinship): Cenél nEógain
Cenél Mic Earca
- Clan name (Tuath): Cenél Mic Earca
- Progenitor: Máel Fithrich m. Áeda Uaridnaich m. Domnaill m. Muircherdaich mac Earca m. Muiredaich m. Éogain
- Location - county, barony or townland: Barony of Clogher, County Tyrone
- Cinéal (Kinship): Cenél nEógain
Cenél Luighdech (also Sil Lugdach)
- Clan name (Tuath): Cenél Luighdech (also Sil Lugdach)
- Progenitor: Lugdach m. Sétnai mic Fergus m. Conaill Gulban m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Ó Domhnaill (O'Donnell)
- Septs (finte): Uí Baoighill (O'Boyles) and the Uí Dochartaigh (O'Dohertys, chiefs of Arda Midhair or Ardmire, perhaps the Finn Valley) Ua Cairbre, Ó Duibhne (DEENY DEANY, DEENEY, DENNY, PEOPLES), Ó Daighre (DEERY, DARRY, DERRY), Mac Dailredochar (DOCKERY DOCKREY, DOCKRY), Ó Dunáin (DOONAN DONAYNE, DONNAN), Ó Dubhthach (Doohey), Ó Glacáin (Glacken), Mac Reannacháin (GRANAHAN, CRENAHAN, CRENAGHAN), Ó hEarghaile (HARLEY HARREL, HARRILY, HERAL), Ó hEigneacháin (HENEGAN HANAGHAN, HANNIGAN), Ó hOireachtaigh (HERAGHTY, ERACHTY, ERRARTY), Mac Meanman (MacMENAMIN, MacMENAM, MacMENAMY), Mac Maongail (MacMONAGLE, MONEYGAL), Ó Coigligh (QUIGLEY, QUIGLY, COGLEY, KEGLEY, TWIGLEY, QUIGG), Mac Robhartaigh (Roarty), Ó Robharcháin (ROWAN, RAGHAN, ROANE, ROHAN, ROUGHAN), Ó Scannail (SCANNELL, SCANLAN), Ó Toráin (TARRANT, TORAN, TORRENS), Mac Muircheartaigh (BREARTY, MacBREARTIE, MacMURTY), Mac Giolla Comhghaill (COYLE COWLE, MacILHOYLE, MULCOYLE), Ó Cromlaoich (CRUMLEY CROMLEY, CRUMLISH, CRUMMELL).
- Location - county, barony or townland: Northern County Donegal
- Cinéal (Kinship): Cenél Conaill
- Branches: Clann Dálaigh (Ua Domhnaill), Clann Chindfaoladh (Ua Baoighill), Arda Midhair
Arda Midhair
- Clan name (Tuath): Arda Midhair
- Progenitor: Lugdach m. Sétnai mic Fergus m. Conaill Gulban m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Ó Dochartaigh (O'Doherty)
- Septs (finte): Mac Giolla Brighdhe (MacBRIDE, GILBRIDE, KILBRIDE, MUCKLEBREED), Mac Eachmharcaigh (MacCAFFERTY MacCAFFERKY, MacCAVERTY), Mac Daibhí (MacDAVITT, MacDADE, MacDAID, MacDEVITT).
- Location - county, barony or townland: Inishowen, Co. Donegal
- Cinéal (Kinship): Cenél Conaill
Cenél mBógaine
- Clan name (Tuath): Cenél mBógaine
- Progenitor: Énnae Bóguine m. Conaill Gulban m. Néill Noígiallaig
- Location - county, barony or townland: Tír Boghaine (barony of Banagh, and part of the barony of Boylagh, in County Donegal).
- Cinéal (Kinship): Cenél Conaill
Cenél Aedha
- Clan name (Tuath): Cenél Aedha
- Progenitor: Aedha m. Ainmirech m. Setna m. Ferghusa cennfhoda m. Conaill Gulban m. Néill Noígiallaig
- Hereditary Chief or Clan chief: Ó Maeldoraidh, Ó Canannáin (O'Cannon)
- Septs (finte): Ó Gallchobhair (O'Gallagher)
- Location - county, barony or townland: Barony of Tirhugh, alias Tír Aedha, in county Donegal
- Cinéal (Kinship): Cenél Conaill
Cenél Duach
- Clan name (Tuath): Cenél Duach
- Progenitor: Tigernach Duí (Duach), son of Conall Gulban.
- Hereditary Chief or Clan chief:
- Septs (finte):
- Location - county, barony or townland:
- Cinéal (Kinship): Cenél Conaill
Clann Chindfaoladh
- Clan name (Tuath): Clann Chindfaoladh
- Progenitor: Baighill m Bradagain m Muirchertaigh m Cindfhaeladh
- Hereditary Chief or Clan chief: Ua Bhaeighill (O'Boyle)
- Location - county, barony or townland: Tir Ainmireach (around Ardara), Three Tuatha (around Falcarragh and Kilmacrennan) and barony of Boylagh in County Donegal.
- Cinéal (Kinship): Cenél Conaill
Muintir Dalachain
- Clan name (Tuath): Muintir Dalachain
- Progenitor: Baoighill m Bradagáin m Muirchertaigh m Cindfhaeladh
- Hereditary Chief or Clan chief: Ó Cearnacháin (e.g. Kernaghan) and Ó Dalachain
- Location - county, barony or townland: Tuath Bladhach (Bladhaigh) anglicized Tuath Doe (now Creeslough & Dunfanaghy), south of Ros-Iorguil (now Downing's & Carrigart) County Donegal
- Cinéal (Kinship): Cenél Conaill
Cenél Eanna
- Clan name (Tuath): Cenél Eanna
- Progenitor: Eanna (Enda), the sixth son of Conall Gulban
- Septs (finte): Hanna, Hainey, Haney, Heaney (O'hEighnigh) (Ó hAnnaidh)
- Location - county, barony or townland: Kings of Magh Ith, Tir Eanna and Fanad in present-day County Donegal.
- Cinéal (Kinship): Cenél Conaill
Cenél Endai
- Clan name (Tuath): Cenél Endai
- Progenitor: Enda, the youngest son of Niall of the Nine Hostages
- Hereditary Chief or Clan chief: ua Lapáin (O'Lappin, Delap) and Aa h-Eicnechan (roughly O'Heneghan)
- Septs (finte): Ua Bresleáin (O'Breslen or Breslin)
- Location - county, barony or townland: the river Errity to Barnesmore, barony of Tir Hugh, to Sruell in the barony of Banagh, County Donegal. Parish of Aughnis, barony of Kilmacrenan.
- Cinéal (Kinship): Uíbh Néill a' Tuaisceart
- Branches: O'Breslin, chiefs in Fanad
Cenél Cairpri [Mor]
- Clan name (Tuath): Cenél Cairpri [Mor]
- Progenitor: Cairbre, son of Niall of the Nine Hostages
- Hereditary Chief or Clan chief: Ó Maolchloiche (O'Mulclohy), a name which was later mistranslated to Stone
- Septs (finte): Ua Bresleáin (O'Breslen or Breslin)
- Location - county, barony or townland: "Críoch Cairpre Droma Cliab" of northern County Sligo and northeast County Leitrim. Barony of Carbury in North Sligo.
- Cinéal (Kinship): Uíbh Néill a' Tuaisceart
- Branches: O'Breslin, chiefs in Fanad, Uí Cairpri Laigen (Ua Chiardha or O'Keary, O'Carey), Cairpre Gabra (Ó Ronáin, O'Ronan)
Síl Aedha Eaniagh
- Clan name (Tuath): Síl Aedha Eaniagh
- Progenitor: Cairbre, son of Niall of the Nine Hostages
- Hereditary Chief or Clan chief: O'Murchada, O'Murphy
- Septs (finte): O'Mellon
- Location - county, barony or townland: Barony of Strabane, County Tyrone.
- Cinéal (Kinship): Uíbh Néill a' Tuaisceart
Conmaicne
The Conmaicne of Magh Réin.
Conmaicne Cuile Toladh
- Clan name (Tuath): Conmaicne Cuile Toladh
- Progenitor: Findchóem (Traech mac Causcraid, or Fráech mac Cúscraigh) m. Cúmscrach (a.k.a. Cumascrach)
- Hereditary Chief or Clan chief: Ó Talcharain (TOLLERAN, TALLERAN, TALRAN, TOLRAN)
- Septs (finte): Ó Calarain (COLLERAN), Ó Morann (O'Moran), Ó Martain (Martin or Martins)
- Location - county, barony or townland: Kilmaine barony, County Mayo.
- Cinéal (Kinship): Conmaicne
- Branches: Síl Cárida, Cenél Enda
Conmaicne Mara
- Clan name (Tuath): Conmaicne Mara
- Progenitor: Conmaic (a quo Conmaicne) m. Oirbsen Máir (a quo Loch n-Oirbsen)...ultimately Fergus mac Roich
- Hereditary Chief or Clan chief: Úa Cadhla (O'Queally or O'Kealy)
- Septs (finte): Mac Conghaile (Conneely, MacNeela), Ó Clochartaigh (Cloherty or Stone),Ó Dubháin (Devany), Mac Fualáin\Ó Cualáin (FOLAN, FOLAND, FOLANE).
- Location - county, barony or townland: Connemara in western Co. Galway.
- Cinéal (Kinship): Conmaicne
Conmaicne Críchi Meic Eircce
- Clan name (Tuath): Conmaicne Críchi Meic Eircce
- Progenitor: Fraech, son of Cumscrach
- Hereditary Chief or Clan chief:
- Location - county, barony or townland: Kilconickny, Co. Galway
- Cinéal (Kinship): Conmaicne
- Branches: Cenél Lughna, Cenél cCais and Cenél Dubháin (Conmaicne Dúna Móir)
Conmaicne Mide la Cuirccne
- Clan name (Tuath): Conmaicne Mide la Cuirccne
- Progenitor: Copchass, in descent from Conmac, son of Orbsen mor.
- Hereditary Chief or Clan chief:
- Location - county, barony or townland: Quirene, a former name of the barony of Kilkenny West, Co. Westmeath.
- Cinéal (Kinship): Conmaicne
Conmaicne Bec
- Clan name (Tuath): Conmaicne Bec
- Progenitor: Conmaic (a quo Conmaicne) m. Oirbsen Máir (a quo Loch n-Oirbsen)...ultimately Fergus mac Roich
- Hereditary Chief or Clan chief: Ua Tolairg (O'Toler)
- Location - county, barony or townland: Quirene, Co. Westmeath
- Cinéal (Kinship): Conmaicne
Muintir Eolais
- Clan name (Tuath): Muintir Eolais
- Progenitor: Finer, son of Cúmscrach (a.k.a. Cumascrach)
- Hereditary Chief or Clan chief: Mac Raghnaill, Mac Rannall (Reynolds or MacGrannell)
- Septs (finte): Ó Mughroin (MORAN, MORAINE, MORANE, MOREN, MORRIN, MORYNE), Mac Searraigh (HERRY, SHARRY, FOALEY)
- Location - county, barony or townland: Leitrim baronies of Mohill and Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Tellach Brocáin (alias Tellach Cagáin), Tellach Cendetigh, Tellach Maelmartain, Tellach maelmuiri, Tellach n-Odrainn,
Tellach Cearbhallan
- Clan name (Tuath): Tellach Cearbhallan
- Progenitor: Finer, son of Cúmscrach (a.k.a. Cumascrach)
- Hereditary Chief or Clan chief: Maoil Mhiadhaigh (Mulvey)
- Septs (finte): Ó Beigléighinn (BEGLIN, BEGLAN, BEGLAIN, BEGNAL, BEGLANE, BIGLANE, BEGLEN, BEGLLIN, BIGLAN, BEGLYN), Ó Bardain (BODEN), Ó hEolusa (Eolais), Ó Muiredaigh (MURRAY, MORIE, MORRA, MORRIE, MOREY, ÓMORY, MURRY, MURRIE), Ó Cuirnin, ollamh (CURNIN, CURNAN, CURNEN), Ó Maolghuala (MULHOOLY, HOOGHLEY, MULHOOGHLEY, MULOOLEY), Mac Mioluic (MULLOCK MacMEELICK, MacMOLEG, MOOLICK, MULLICKE, MULOCK).
- Location - county, barony or townland: Leitrim baronies of Mohill and Leitrim
- Cinéal (Kinship): Muinter Eolais, Conmaicne of Magh Réin
Cenel Luachain
- Clan name (Tuath): Cenel Luachain
- Progenitor: Luachan, son of Onchu, and 4th in descent from Cumscrach
- Hereditary Chief or Clan chief: Mag Dorchaidh or Mac Dorchaidhe (Mac Dorcy, Darcy, Dorcey, MacGourkey)
- Septs (finte): Ó Dunain (DOONAN DONAYNE, DONNAN, DOONANE, DOUNAN, DUNNAN, DYNAN), Ó Ciardubhain (KEARON, KERRANE, KERRIVANE, KERWAN, KIRRANE)
- Location - county, barony or townland: Oughteragh parish, barony of Carrigallen, southern co. Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Ui Bathbairr, Ui Braici, Ui Buibhin, Ui Chailti, Ui Cianacáin, Ui Conbhuidhe, Ui Damaigh of Cenél Luachain, Ui Dimusaigh, Ui Dubháin (Inis Doiri Dubháin), Ui Erailb, Ui Eturrain, Ui Gabhadáin, Ui Maelpátraig, Ui Maelsuthain, Ui Muinecháin, Ui Tredmain, Tellach Tanaide, Tellach Cléirigh.
Clann Calbrainn
- Clan name (Tuath): Clann Calbrainn
- Location - county, barony or townland: Co. Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Clann Martain, Clann Maelduilighe, Clann Bradain, Clann Arcain and Tellach Uanan
Clann Faelgusa
- Clan name (Tuath): Clann Faelgusa
- Location - county, barony or townland: Co. Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Clann Corrdercain, Clann Gemáin, Clann Cathusaigh, Clann Dinnachain, Clann Birn, Clann Anairc, Ui Conbhuidhe, Ui Gellustain, Ui Riaglachain.
Clann Finoicci, or Sil Findellaig
- Clan name (Tuath): Clann Finoicci, or Sil Findellaig
- Progenitor: Descendants of Finoicc, 2nd wife of Findellach, son of Neidhe, and 5th fr. Cumscrach
- Location - county, barony or townland: Co. Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Clann Telline, Clann Cronan, Clann Ainnsin, Clann Chirdubhain, Clann Finn, Clann Ciaracan, Clann Ibill
Cenél Cromáin
- Clan name (Tuath): Cenél Cromáin
- Location - county, barony or townland: Co. Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
Clann Faelchon
- Clan name (Tuath): Clann Faelchon
- Location - county, barony or townland: Co. Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
Tellach Finnachan
- Clan name (Tuath): Tellach Finnachan
- Location - county, barony or townland: Co. Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
Síl Maelefithrig
- Clan name (Tuath): Síl Maelefithrig
- Location - county, barony or townland: Co. Leitrim
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Clann Clothachtaigh and Clann Oirechtaigh
Clann Fermaighe
- Clan name (Tuath): Clann Fermaighe
- Progenitor: Findellach, the son of Neidhe, and 5th in descent from Cumscrach
- Hereditary Chief or Clan chief: Mac Cogadhain or Mac Acadhain (Mac Cogan)
- Location - county, barony or townland: Glenfarne in the parish of Cloonclare in the baronies of Dromahaire and Rosclogher, Co. Leitrim.
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Clann Cellachain, Clann Maelsamhna, Clann Taebhachain, Clann Ubhan, Clann Lughann, and Clann Uanan
Muintir Geradháin
- Clan name (Tuath): Muintir Geradháin
- Hereditary Chief or Clan chief: Mag Fhionnbhairr (Mac Ginver, Gaynor, or Finnevar)
- Location - county, barony or townland: Lough Gowna in Co. Longford
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Tellach Finnoigi, Tellach Gabhadháin.
Muintír Giollagáin
- Clan name (Tuath): Muintír Giollagáin
- Progenitor: Race of Rudhraigh, that is, of the same stock as Mag Raghnaill of Muinter Eolais
- Hereditary Chief or Clan chief: O Cuinn (O'Quin)
- Location - county, barony or townland: Teathbha, baronies of Moydow and Shrule Co. Westmeath
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Tellach Connucan, Tellach Gormghaili, Tellach Maoilchíaráin
McGoldrick
- Clan name (Tuath): Muintír Giollagáin
- Progenitor: Race of Rudhraigh, that is, of the same stock as Mag Raghnaill of Muinter Eolais
- Hereditary Chief or Clan chief: Dave (Dave)
- Location - county, barony or townland: Up Meath Up Naven
- Cinéal (Kinship): Conmaicne of Navan
- Branches: Rob
Muintir Anghaile
- Clan name (Tuath): Muintir Anghaile
- Hereditary Chief or Clan chief: Ua Fearghaile (O'Farrell)
- Septs (finte): Mac Gofraidh (MacSHAFFREY, GEOFFREY, JEFFRIES, SHEFFRY), Mac Concaille (MacCONCAILLE MacCONKEEL, MacENHILL, WOODS), Mac Conmhaic (CONNICK, CONNOCK, CONWICK), Mac Tadghan (KEEGAN KEAGHAN, KEAHAN, KEEHAN), Mac Cú Shléibhe (MacLEAVY MacALEAVY, MacCLEEVEY), Mac Murchadha (MacMORROW, MURROGH, MURROW, MORROGH, MORROW), Mac Seáin (MacSHANE, JOHNSON), Ó Súilleabháin (SULLAHAN SOOLAHAN, SULLEHAN, SULLIHAN), Ó Tormaigh (TORMEY, TARMEY, TORMAY).
- Location - county, barony or townland: Annually in county Longford
- Cinéal (Kinship): Conmaicne of Magh Réin
- Branches: Tellach Congaláin, Tellach Floinn
Síol Faolcháin
- Clan name (Tuath): Síol Faolcháin
- Progenitor: Éogan Cáech (Síl Mella,), son of Nath Í, and great-grandson of Éana Cionnsealach
- Hereditary Chief or Clan chief: Mac Murchadha sept (MacMurrough, Kinsella), Kavanagh (Mac Murchadha Caomhánach or Ó Caomhánaigh). Current Chief is William Butler Kavanagh (Wales)
- Septs (finte): Ua Finnthighearn (Finneran), Mac Bhadach (VADDOCK, MADDOCK, WADDICK, WADDOCK), Mac Dáibhí Mór (DAVIDSON, DAVIS, DAVYMORE, MacDavie More), Ó Dúnlaing (DOWLING, DOOLAN, DOOLEN, DOWLAN, DUNLANG: Síol Elaigh sept)
- Location - county, barony or townland: South Wicklow & north-east Wexford
- Cinéal (Kinship): Uí Chionnsealaigh
- Branches: Gahan's of Síol Ealaigh (barony of Shillelagh)
Siol aElaigh
- Clan name (Tuath): Siol aElaigh
- Hereditary Chief or Clan chief: Ó Gaotháin (GAHAN)
- Septs (finte): Ó Niall, Ó Dúnlaing
- Location - county, barony or townland: South Wicklow & north-east Wexford
- Cinéal (Kinship): Síol Faolcháin, Uí Chionnsealaigh
Uí Felmeda Thes
- Clan name (Tuath): Uí Felmeda Thes
- Hereditary Chief or Clan chief: Úa Murchadha or MacMurchadha (O'Murroughe, Murrowe, Morrow, Murrow or Murphy) chiefs of Crioch O'Felme or Hy-Feidhlme [Hy-Felimy]
- Septs (finte): Ó Gairbhain (GARVAN, GIRVAN)
- Location - county, barony or townland: Offelimy, now the barony of Ballaghkeen, in County Wexford. Oulartleigh Castle
- Cinéal (Kinship): Uí Ceinnselaig
Uí Felmeda Tuaidh
- Clan name (Tuath): Uí Felmeda Tuaidh
- Progenitor: Oilioll mac Muiredaig, alias Ui Onchon
- Hereditary Chief or Clan chief: O'Garvey
- Location - county, barony or townland: Tulach Ua Felmedha, a.k.a. Tullowphelim, became the namesake for the parish of Tullow. Rathvilly, Co. Carlow
- Cinéal (Kinship): Uí Ceinnselaig
Sil Chormaic (Clann Cormaic)
- Clan name (Tuath): Sil Chormaic (Clann Cormaic)
- Progenitor: Cormaicc m. Nath Í m. Crimthaind m. Énnai Ceinselaig
- Hereditary Chief or Clan chief:
- Location - county, barony or townland: River Slaney basin in County Wexford, the MacMurrough royal demesne around Ferns, as well as the barony of Scarawalsh
- Cinéal (Kinship): Uí Ceinnselaig
- Branches: Cuthraighe, Ua Trena, Ui Cruinn or Ui Cuinn, Ua Gabla Fine and Ua Gabla Roireann
Sil Máeluidir
- Clan name (Tuath): Sil Máeluidir
- Hereditary Chief or Clan chief: Ua hArtghaile (Hartley)
- Septs (finte): Ó Foirtcheirn (FORTUNE, FORTIN), Ó Laidhgnen (LYNAN, LYNAGH, LEEGYAN), (both Ui Deagha), Ó Cuilen (Cullen)
- Location - county, barony or townland: The Baronies of Shelmalier in county Wexford
- Cinéal (Kinship): Uí Ceinnselaig
- Branches: Ui Deagha, Ferann na Cenél
Uí Fergusa
- Clan name (Tuath): Uí Fergusa
- Location - county, barony or townland:
- Cinéal (Kinship): Uí Ceinnselaig
Clann Guaire
- Clan name (Tuath): Clann Guaire
- Cinéal (Kinship): Uí Ceinnselaig
Clann Fiachu meic Ailella
- Clan name (Tuath): Clann Fiachu meic Ailella
- Cinéal (Kinship): Uí Ceinnselaig
Uí Muiredaig
- Clan name (Tuath): Uí Muiredaig
- Progenitor: Descend from Ughaire, a King of Leinster (died 956), Muiredaig m. Murchada m. Bráen (d. 693)
- Hereditary Chief or Clan chief: Ua Tuathail (O'Toole)
- Septs (finte): Ua Lorcáin
- Location - county, barony or townland: The baronies of Kilkea and Moone, Narragh and Reban East and West, and parts of Connell, in co. Kildare, plus the plus west half of Uí Mail, in co. Wicklow.
- Cinéal (Kinship): Uí Dúnlainge
Uí Dúnchada
- Clan name (Tuath): Uí Dúnchada
- Progenitor: Gillai Mo Cholmóc m. Cellaich m. Dúnchada m. Lorccáin m. Fáeláin m. Muiredaig m. Bróen m. Fáeláin m. Cellaich m. Dúnchada m. Murchada.
- Hereditary Chief or Clan chief: Mac Gilla Mo-Cholmóg (FitzDermot or COLEMAN)
- Septs (finte): Ó Duibhghin (Dugan), Ó Tadhgain (TEAGAN, TEEGAN).
- Location - county, barony or townland: The land between the river Liffey and the 'Dublin' mountains.
- Cinéal (Kinship): Uí Dúnlainge
Uí Fáeláin
- Clan name (Tuath): Uí Fáeláin
- Progenitor: Fáeláin m. Murchada m. Find m. Máel Mórda m. Muirecain m. Diarmata m. Rhuadri m. Fáeláin m. Murchada m. Bráen
- Hereditary Chief or Clan chief: Ó Broin (O'Byrne)
- Septs (finte): MacEochaidh (MacKeogh)
- Location - county, barony or townland: Crioch Bhranach, and included the barony of Newcastle with parts of the baronies of Ballinacor and Arklow.
- Cinéal (Kinship): Uí Dúnlainge
Uí Fergusa
- Clan name (Tuath): Uí Fergusa
- Progenitor: Fergus son of Dúnlang, son of Enna Nia, son of Bressal Bélach, son of Fiachu Baicced, son of Cathir Mor.
- Location - county, barony or townland: Their traditional territory immediately west of Dublin prior to the arrival of the Vikings, other sources give their territory between the river Liffey and Fir Cualand.
- Cinéal (Kinship): Uí Dúnlainge
Uí Briúin Cualand
- Clan name (Tuath): Uí Briúin Cualand
- Progenitor: Brian, son of Enna Nia, son of Bressal Bélach, son of Fiachu Baicced, son of Cathir Mor
- Hereditary Chief or Clan chief: Ó Coscrach (Cosgrave, or Cosgrove)
- Location - county, barony or townland: Baronies of Ballinacor North and Rathdown, in co. Wick., and the south half of the barony of Rathdown, in co. Dublin.
- Cinéal (Kinship): Dál Niad Cuirp
Uí Máeli Tuile
- Clan name (Tuath): Uí Máeli Tuile
- Progenitor: Fiachu Ba h-Aiccid, a son of Cathaír Már
- Hereditary Chief or Clan chief:
- Location - county, barony or townland:
- Cinéal (Kinship): Dál Niad Cuirp
Uí Bairrche
- Clan name (Tuath): Uí Bairrche
- Progenitor: Dáire Barraig m. Cathaír Máir
- Hereditary Chief or Clan chief: Mac Gormain (GORMAN)
- Septs (finte): Mic Raith (MacGRATH), Ó Tresaigh (TRACY, TRASSY, TRACIE), Ó Duibhin (Duffin)
- Location - county, barony or townland: Lord of Bargy at Slievemargy, Laois
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Uí Bairrch Maige hAilbe (Carlow), Uí Bairrche of Mag Argetrois, Uí Bairrche Maige Indergraith (Uí Chritain) & Uí Bairrche Tíre (Uí Dimmatain), Uí Bairrche Magh dá chonn
Uí Bairrch Maige hAilbe
- Clan name (Tuath): Uí Bairrch Maige hAilbe
- Progenitor: Mostly from Eochu Guinech ...Dáire Barraig m. Cathaír Máir
- Hereditary Chief or Clan chief:
- Septs (finte): Úi Briccne, Úi Cellaig, Úi Scatháin, Úi Cutlacháin, Úi Máeláin ("Mullen, Moylan, McMullen"), Úi Dobágu, Úi Fólachtáin, Úi Chommáin (Comane), Úi Gobbáin (Gowan), Úi Nárbotha, Síl Saichtha, Úi Canáin (Cannon?), Úi Conamla, Úi Crítáin, Úi Drescáin (or Úi Treascáin),Úi Émíne, Úi Pecclíne (Pelan ?), Úi Taidc (Teige), Úi Bóeth (see Úi Meic Barddíne), Úi Brandubáin (Braniff), Úi Brénaind (Brennan?), Úi Briúin ("Breen, Brown, Burns")
- Location - county, barony or townland: Baronies of Slievemargy in Co. Laois, parts of Idrone in Co. Carlow, and Kilkee and Moone in Co. Kildare)
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Úi Cellaig (Or Úi Ellaig)
Uí Bairrche Mag Argetrois
- Clan name (Tuath): Uí Bairrche Mag Argetrois
- Progenitor: Dáire Barraig m. Cathaír Máir
- Location - county, barony or townland: The ancient name of Ballyragget in Kilkenny was Dún Tulach Uí mBairrche (Tullabarry/Tulacbarry)
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Clann Síláin (amongst the Osraighe)
Uí Bairrche Magh dá chonn
- Clan name (Tuath): Uí Bairrche Magh dá chonn
- Progenitor: Dáire Barraig m. Cathaír Máir
- Hereditary Chief or Clan chief: Úi Fétháin
- Septs (finte): Ui Cearnaigh i Muigh Dha Chonn (O’Carny, O’Kearney)
- Location - county, barony or townland: Moyacom of East Carlow
- Cinéal (Kinship): Dál Niad Cuirp
Uí Bairrche Maige Dergráith
- Clan name (Tuath): Uí Bairrche Maige Dergráith
- Progenitor: Dáire Barraig m. Cathaír Máir
- Septs (finte): Úi Amsáin, Úi Crítáin, Úi Bodbáin, Úi Brócáin (O’Brogan), Úi Buidechair
- Location - county, barony or townland:
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Síl Cillíne Scothbán
Uí Bairrche Tíre
- Clan name (Tuath): Uí Bairrche Tíre
- Progenitor: Mostly from Féicc....Dáire Barraig m. Cathaír Máir
- Hereditary Chief or Clan chief: Uí Treasaigh
- Septs (finte): Úi Dímatáin, Úi Mincháin, Síl Rossa mc Muiredaig, Úi Senáin, Úi Móenaig (Mooney), Úi Rónáin (Ronane or Royane), Úi Cuilíne (Cullen) dia fail Diarmait Glinni Uissen, Síol Cumaine (Cummin), Úi Cutlacháin dia fail Diarmait Glinni Uissen, Úi Dobágu, Úi Móenacháin (Mangan), Ui Nialláin (Nealon)
- Location - county, barony or townland: The barony of Bargy
- Cinéal (Kinship): Dál Niad Cuirp
Uí Crimthainn Áin
- Clan name (Tuath): Uí Crimthainn Áin
- Progenitor: Crimthaind Áin m. Cathaír Máir
- Hereditary Chief or Clan chief: O'Duff
- Location - county, barony or townland: Dún Masc (the rock of Dunamase)
- Cinéal (Kinship): Dál Niad Cuirp
Uí Failge
- Clan name (Tuath): Uí Failge
- Progenitor: Donnchad mc Con Faifne m. Murchertaig m. Congalaig m. Duind Slébi m. Brógarbáin m. Conchobuir m. Find m. Máel Mórdae m. Conchobuir m. Flannacáin m. Cináeda m. Mugróin m. Óengussa m. Flaind m. Díumasaig m. Forannáin m. Congalaig m. Máel h-Umae m. Cathail m. Éogain Bruidne m. Nath Í m. Rossa Failgi m. Cathaír Máir.
- Hereditary Chief or Clan chief: Ua Conchobair Failghe (O'Connor Faly)
- Septs (finte): O Caomhanaigh, O Tuathalaigh, O Branaigh, O Duinn, O Diomasaigh, O Duibhidhir, muinntear Riain, Mac an Chrosain (MacCROSSAN), Ó hEimhin (HEAVEN EVANS, EVINS, HEAVAN), Ó hUidhrin (HEERIN, HEERAN, HEERANE, HEFFRON, HERANE, HEVERIN, HYRANE), Ó Reachtabra (RAFTER RAFFTER, RAFTERY, RAFTIS, RAGHTORE, WRAFTER), Ó Seabhlain (HEVLIN, SHOVELIN, TEVLIN), Mac Spealáin (SPILLANE, SMOLLEN, SPALANE, SPELLAN, SPELMAN), Ó hAimhergin (ERGIN, BERRIGAN, BERGAN, HAMERGIN), Ó Breacain (BRACKEN), Ó Conarain (CONDRON, CONDRAN, CONDRIN, CONERAN, CONORAN), MacConnla (CONLEY CONLY, CONNLA),
- Location - county, barony or townland: The territory of Ui Failghe or Ophaley comprised the following Baronies: Geshill in the King's Co.; Upper Philipstown and Lower Philipstown in the King's Co.; Warrenstown and Collestown in the same County; Ophaley or Offaley in the Co. of Kildare; Portnahinch and Tinahinch in the Queen's County.
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Uí Riagáin (O'Regan and O'Dunne), and the Clann Máellugra (O'Dempsey), Maigh Aoife, Uí Mealla, Clann Mugróin, Uí Bercháin, Uí Nialláin, Uí Berraide, Cenel Aitheamháin, Uí Flaind, Uí Chormaic, Uí Móenaig, Uí Berraidi, Uí Airmedaig, Uí Máele Topair, Uí Chuilíne, Uí Máel Aithgén, Uí Maine, Uí Onchon
Uí Riagáin
- Clan name (Tuath): Uí Riagáin
- Progenitor: Cerball & Mac Tíre dá m. Con Bladma m. Con Allaid m. Fidallaid m. Duinn m. Duibgilla m. Máel Finne m. Riagáin m. Cináeda m. Mugróin m. Flaind.
- Hereditary Chief or Clan chief: Ó Riagain (O'Regan and O'Dunne)
- Location - county, barony or townland: The barony of Tinnahich, the most northern barony of Co Leix (Laois)
- Cinéal (Kinship): Uí Fáilghe
Clann Máellugra a.k.a. Cenél Maoilughra, Clanmalier
- Clan name (Tuath): Clann Máellugra a.k.a. Cenél Maoilughra, Clanmalier
- Progenitor: Flann m. Máel Ruanaid m. Cellaich m. Máel Augra m. Conchobuir m. Áeda m. Tomaltaich m. Flaind m. Díumasaich m. Congaile m. Forannáin m. Congaile m. Máel h-Umai m. Cathail m. Bruidge m. Nath Í m. Rosa Failgi.
- Hereditary Chief or Clan chief: Ua Díomasaigh (Dempsey)
- Septs (finte): Ó Bearghda (BARRY, BEARY), Ó Maoil Eimhin (MULLAVIN MALLAVIN, MacLAVIN, MULLEVANE, MULLEVEN, MULLIVANE, Ó Coinin (CONINE, CUNEEN, KINANE, KINNEEN)
- Location - county, barony or townland: Barony of Upper Philipstown in the King's County and the Barony of Portnahinch in the Queen's County.
- Cinéal (Kinship): Uí Failge
Clann Colgcan (Clann Cholgaín)
- Clan name (Tuath): Clann Colgcan (Clann Cholgaín)
- Progenitor: Domnall Úa Óengusa m. Áeda m. Uallacháin m. Taidgc m. Uallacháin m. Taidgc m. Domnaill m. Óengusa m. Cummascaig m. Colgcan m. Mugróin m. Flaind Dá Chongal m. Díumasaich m. Forannáin m. Congaile m. Máel h-Umai m. Cathail [m. Éogain] m. Bruidge m. Nath Í m. Rosa Failgi m. Cathaír Máir.
- Hereditary Chief or Clan chief: Ua hAonghusa (O'Hennessy)
- Septs (finte): Ua hUallachain (O'Holohan or O'Houlihan), Uí Rotaidi, Uí Muricáin, Uí Bróen, Uí Cholgan, Ó Mael Eidigh (MULEADY, MALADY, MALLEW, MELODY, MILEY, MILLEA), Ó Maolagain (MULLIGAN, MILLICAN, MILLIKAN, MILLIKEN), Mac Cochlainn (COLGAN)
- Location - county, barony or townland: Barony of Lower Philipstown, Co. Offaly
- Cinéal (Kinship): Uí Failge
- Branches: O'Hennessy of Gailenga Bec, and of Uí Mac Uais
Ui Mealla
- Clan name (Tuath): Ui Mealla
- Progenitor: Rosa Failgi m. Cathaír Máir.
- Hereditary Chief or Clan chief: Ó Finnthighearn (FINNERAN, FANARAN)
- Septs (finte): Mac an Bhaird (Ward)
- Location - county, barony or townland: Uisneach, now in Galway and Roscommon
- Cinéal (Kinship): Uí Failge
Maigh Aoife
- Clan name (Tuath): Maigh Aoife
- Progenitor: Rosa Failgi m. Cathaír Máir.
- Hereditary Chief or Clan chief:
- Septs (finte): Ó Moenaigh (MOONEY, MAINEY, MEONA, MOONY), Ó Mughron (MORAN, MORAINE, MORANE, MOREN, MORRIN, MORYNE, MOURANE, MURRAN), Ó Muireagain (MORGAN MORRIGAN, MURCAN, MURGAN, MERRIGAN)
- Location - county, barony or townland: Parsons of Ballymooney, Geasehill, Offaly
- Cinéal (Kinship): Uí Failge
Uí Enechglaiss
- Clan name (Tuath): Uí Enechglaiss
- Progenitor: Dúnlang m. Fiachrach m. Fínnsnechtae m. Cináeda m. Cathail m. Fiachrach m. Dúnchada m. Dúnlaing m. Dúngalaig m. Thuamín m. Máel Doborchon m. Dícolla m. Éogain [m. Beraig] m. Muiredaig m. Amalgada m. Nath Í m. Bressail Enechglais (a quo Uí Enechglais) m. Cathaír Máir.
- Hereditary Chief or Clan chief: Ua Fiachrach (O'Feary, FEERY, FEIGHRY, FEHERY, FEEREY, HUNT)
- Location - county, barony or townland: South of Arklow in County Wicklow
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Uí Inmiti, Uí Aithemon Mestige, Cenél Lugair Fatha h-uir dia tát Uí Cruchtáin, Síl Fuamnaige .i. Uí Toísecháin ó Druim Laígill: Síl Duib Damruis Uí Gobbáin & Uí Muirbetaig & Uí Dimbrogo Nuadat
Uí Drona
- Clan name (Tuath): Uí Drona
- Progenitor: Labraid Laidech, son of Bressal Bélach, son of Fiachu Baicced, son of Cathair Mór
- Hereditary Chief or Clan chief: Ó Riain (RYAN, ROYNE, RYNE, RYANE)
- Septs (finte): Ó Domhnaill (DONNELL, DANIEL, DANIELS), Ó Dubhgilla (DOYLE DOWALL, DOWILLA, DOYAL), Ó hEideain (HAYDEN HAYDAN, HAYDON, HEADON, HEDANE, HEDIAN, HEYDON)
- Location - county, barony or townland: Baronies of Idrone East and West in county Carlow
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Ui Drona Laighin
Uí Cheithig a.k.a. Uí Ceataigh
- Clan name (Tuath): Uí Cheithig a.k.a. Uí Ceataigh
- Progenitor: Cathair Mór's son Ailill Cétach (Céthech)
- Hereditary Chief or Clan chief: Ó Ceatfadha (KEATY, KEATHY)
- Location - county, barony or townland: Baronies of Ikeathy and Oughterany in northern Co. Kildare (Cenel n-Ucha and Uachtar Fine, respectively). Crích na Cétach: baronies of Warrenstown, co. Offaly and neighboring Upper Moyfenrath, co. Meath.
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Cenél Ucha comprised the Uí Fithcellaigh, Uí Maili Derir, Uí Bóetain, Uí Broscai and Uí Folaing., Uí Mainchin of Tír Cenél nUcha, Ui Faebrannáin Uachtair Fine (of Ui Fine), Cilline mór, son of Coirpre, ancestor of the Ua Meimre and the Ui Foebraind of Uachtar Fine
Cinel Uchae
- Clan name (Tuath): Cinel Uchae
- Hereditary Chief or Clan chief:
- Septs (finte): Ó Coscrach (COSGRAVE, COSGROVE, COSKRY, CUSKER,), Ó Beaghain (BEHAN, BEAGHAN, BEAN, BEEGAN, BEGGANE, BEHANE, BIGANE, BIGGANE, BIGGINS, LITTLE), Ó Cobthach (COFFEY COFFEE, COFFIE, COFFY, COWEY, COWHEY, COWHIG), Mac Fhogartach (GOGARTY, GOGERTY, GOGGARTY)
- Location - county, barony or townland: Baronies of Ikeathy and Oughterany in northern Co. Kildare (Cenel n-Ucha and Uachtar Fine, respectively). Crích na Cétach: baronies of Warrenstown, co. Offaly and neighboring Upper Moyfenrath, co. Meath.
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Uí Fithcellaigh, Uí Maili Derir, Uí Bóetain, Uí Broscai and Uí Folaing., Uí Mainchin of Tír Cenél nUcha (Clann Manchine at the Liffey)
Uí Dergmosaich h-ic Áth Chliath
- Clan name (Tuath): Uí Dergmosaich h-ic Áth Chliath
- Progenitor: Dergmosach m. Cathaír Már
- Location - county, barony or townland: Áth Chliath
- Cinéal (Kinship): Dál Niad Cuirp
Uí Luascán
- Clan name (Tuath): Uí Luascán
- Progenitor: Fergus Luascán m. Cathaír Már
- Cinéal (Kinship): Dál Niad Cuirp
Uí Timmíne
- Clan name (Tuath): Uí Timmíne
- Progenitor: Eochu Timmíne m. Cathaír Már
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Uí Báetáin, Uí Buide
Uí Máil
- Clan name (Tuath): Uí Máil
- Progenitor: Maine Máil m. Feidelmid Fir Aurglais m. Corbmaic Gelta Gáeth m. Niad Cuirb (Nia Corb) m. Con Corb (Cu Chorb)
- Hereditary Chief or Clan chief: Uí Ceallaig Cuallan (O'Kelly of the Dublin/Wicklow hills)
- Septs (finte): Uí Theig or Ó Taidhg (O'Tighe),
- Location - county, barony or townland: The Glen of Imaal, Co. Wicklow
- Cinéal (Kinship): Dál Niad Cuirp
Uí Deaghaidh
- Clan name (Tuath): Uí Deaghaidh
- Progenitor: Labraid Laidech, son of Bressal Bélach, son of Fiachu Baicced, son of Cathair Mór
- Hereditary Chief or Clan chief: Ó hAedha (Ó Hea,O'Hay or Hughes)
- Location - county, barony or townland: Limerick Hill (Luimnech) in north County Wexford, barony of Gorey
- Cinéal (Kinship): Dál Niad Cuirp
- Branches: Uí Dega Tamhnaige (of Dál Birn) of north Ossory and the Uí Dega Bic (desc. from Daig Bec m. Labrada) of Offaly
Dál Cormaic Luisc
- Clan name (Tuath): Dál Cormaic Luisc
- Progenitor: Corbmaic m. Con Corb (clan of Cormac Losc)
- Location - county, barony or townland: Located in the southernmost barony of County Kildare, that is the barony of Kilkea and Moone.
- Cinéal (Kinship): Laighin
- Branches: Uí Labrada, Uí Gabla Fini, Uí Gabla Roírenn, Uí Buide, Uí Dega Bic .i. Uí Muiredaig, Uí Chuilind, Uí Labrada Cuthraige .i. Síl Fergusa Cuthig, Uí Chuircc, Uí Librén, Uí Ochrai.
Uí Buide
- Clan name (Tuath): Uí Buide
- Progenitor: Echthigern m. Donngusa m. Mencossaig m. Máelgairb m. h-Uargusa m. Buide (a quo Uí Buide) m. Laidcnén m. Cuimmíne m. Colmáin Elténe m. Blaithmeic m. Áeda Indén m. Cathbad m. Labrada m. Imchada m. Cormaic m. Con Corb.
- Hereditary Chief or Clan chief: Ó Caollaidhe (Queally, O'Kealy or O'Kelly)
- Location - county, barony or townland: Barony of Ballyadams, County Leix. East Kilkenny; and at Ballykealey, Carlow.
- Cinéal (Kinship): Dál Cormaic Luisc
Uí Labrada
- Clan name (Tuath): Uí Labrada
- Progenitor: Sinchell m. Cenannáin m. Macha mc Cruaich m. Dulge m. Imchada m. Brolaich m. Lugdach m. Labrada m. Imchada m. Corbmaic m. Con Corb
- Septs (finte): Cuthraighe (Ui Cormaic Laighen)
- Cinéal (Kinship): Dál Cormaic Luisc
- Branches: Uí Labrada Cuthraige .i. Síl Fergusa Cuthig, Uí Chuircc, Uí Librén, Uí Ochrai
Uí Gabla
- Clan name (Tuath): Uí Gabla
- Progenitor: Sinchell m. Cenannáin m. Macha mc Cruaich m. Dulge m. Imchada m. Brolaich m. Lugdach m. Labrada m. Imchada m. Corbmaic m. Con Corb
- Septs (finte): Cuthraighe? (Ui Cormaic Laighen)
- Location - county, barony or townland: Barony of North Salt in northern County Kildare & Roíriu (now Mullaghreelion) a few miles south of Athy in south Kildare, respectively
- Cinéal (Kinship): Dál Cormaic Luisc
- Branches: Uí Gabla Fine & Uí Gabla Roírenn
Dál Messin Corb (Ui Meisincorp)
- Clan name (Tuath): Dál Messin Corb (Ui Meisincorp)
- Progenitor: Mesin Corb mc Con Corbb
- Hereditary Chief or Clan chief: Ua Feghaile (O'Farrelly, Uí Garrchon)
- Location - county, barony or townland: Wicklow mountains, to north of Arklow in county Wicklow. Originally, Liffey plain.
- Cinéal (Kinship): Dál Messin Corb
- Branches: Uí Garrchon, Uí Con Corbb, Uí Con Cainnig, Uí Chúáin, Uí Alténi, Uí Doccomláin, Uí Bróccáin, Uí Garbáin, Uí Chon Galand, Uí Bróccéni, Cenél Ciaráin & Uí Techtaire, Uí Meic Aird Maigne & Uí Moínaig & Uí Conndoith & Uí Feichíne & Uí Cáechtangéni, Uí Noíthig & Uí Follomuin & Uí Forandlo, Uí Dímmae Cirr & Uí Congnaid, Uí Dubchróin & Uí Beraich, Uí Donnáin & Uí Sáráin
Uí Garrchon
- Clan name (Tuath): Uí Garrchon
- Progenitor: Domnall m. Fergaile m. Flaithnia m. Máel Kalland m. Gormáin m. Fáebuirdatha m. Dúngaili m. Cethernaig m. Fáeburdatha m. Dúngaile m. Cethernaig m. Fáebuirdatha m. Marcáin m. Cillíne m. Rónáin m. Sinill m. Conaill m. Con Chongalt m. Finnchada m. Garrchon m. Fothaid m. n-Echach Lámdeirg m. Mesin Corb mc Con Corbb.
- Hereditary Chief or Clan chief: Ua Feghaile (O'Farrelly)
- Septs (finte): Ó Corra (CORR, CARRY, CARR), Ó Guaire (GORRY, GORY, GORE, GORRIE), Ó Lionnain (LENNON, LANNING, LEENAN, LENAN, LENANE, LENNANE),
- Location - county, barony or townland: Kings of Fortuath Laigin at Bray, Wicklow.
- Cinéal (Kinship): Dál Messin Corb (Ui Meisincorp)
- Branches: Ui Saráin (Chimbeada), Ui Brain Deilgine, Ui Cholmain Fordobuil
Dal Cairbre Aradh (Dál Coirpri Aradh) Cliach
- Clan name (Tuath): Dal Cairbre Aradh (Dál Coirpri Aradh) Cliach
- Progenitor: Mál mac Arbhara...Flaithbertach m. Crunnmaíl m. Commáin m. Fínáin m. Fhaigir m. Eirníne m. Féicc m. Meic Ieir m. Gossa m. Fabrich m. Máil m. Ainmerech m. Fir Roith m. Muine m. Fir Neud m. Fir Lugdach m. Buain m. Argatibair m. Cairpre Cluichechair mc Con Corb & Eithne Sithbaicce ingen side Óengusa Múisc
- Septs (finte): Ó hIarlaith (HERLIHY, HARLEY, HURLEY), Ó Geibhennach (GIVNEY, COVENEY, GEANY, GEVENEY, GIBNEY, GUINAN, GUINEA, KEVENEY), Ó Cathalain (, Ó Cadhla (KEILY, KEALY, KEELY, KIELY), Ó Longaidh (LONG, LONGY), Mac Muirnigh (MURNEY, MORNIE, MORNEY), Mac Bearthagra (BERKERY BARAGRY, BARGARY, BARRAGRY, BERACHRY, BERKERRY)
- Location - county, barony or townland: Ara Chliach was centered east of the city of Limerick, perhaps in or near the baronies of Clanwilliam and Coonagh in northeastern county Limerick.
- Cinéal (Kinship): Dál Cairpre Cluichechair
- Branches: Uaithne Cliach, Uí Cuanaigh (MacMuirnigh, Ó Longaidh)
Dal Cairbre Aradh Tíre
- Clan name (Tuath): Dal Cairbre Aradh Tíre
- Progenitor: Finnchaidh, son of Ferroith...Connaid m. Máeli Doburchon m. Lóchéne m. Demle m. Lommáin m. Cuirc m. Findchada m. h-Írchada m. Fir Roith m. Fir Nuad m. Buain m. Airgetbrain m. Cairpri Cluichechair m. Con Corb unum genus est & Dál Cairpri Arad Tíre.
- Hereditary Chief or Clan chief: Ó Riada (REIDY, REEDY, REDDY, READY -W. Tipp.), Ó Donnagain (DONEGAN, DONNEGAN, DONNEGANE, DOONICAN, DOONIGAN, DUNICAN, DUNNIGAN)
- Septs (finte): Ó Murnain (MURNANE, MARRINANE, MARNANE, WARREN-W. Tipp.), Ó hAinmhireach (HANBERRY, HANNEBERRY, HANBURY, HAMERY, ANSBORO-W. Tipp.), Ó Bodhran (BURRANE, BORAN -W.Tipp), Ó Danchair (DANAHER, DANAGHER), Ó Dubh Dabharc (DURACK, DOORICK -W.Tipp Uaithne Tíre), Ó Loingsigh (LYNCH, LYNCHY, LENCH, LENCHY)
- Location - county, barony or townland: Co. Tipperary (Aradh Tíre was located in northern Tipperary, within the half barony of Ara (and Owney) or the northern half of the barony of Owney and Ara.)
- Cinéal (Kinship): Dál Cairpre Cluichechair
- Branches: Uaithne Tíre
Dál Coirpri Cliach (Dál Coirpri Loingsic Beic)
- Clan name (Tuath): Dál Coirpri Cliach (Dál Coirpri Loingsic Beic)
- Progenitor: Lughaidh Corb from,..Cairpre Cluichechair mc Con Corb & Eithne Sithbaicce ingen side Óengusa Múisc
- Location - county, barony or townland: Barony of Idrone in Co. Carlow (in Leinster).
- Cinéal (Kinship): Dál Cairpre Cluichechair
- Branches: Dál Coirpri Loingsic
Dál Coirpri Loingsic
- Clan name (Tuath): Dál Coirpri Loingsic
- Progenitor: Coirpri Musc the poet, who received the land of Tír nAmhais from Aongus Musc. ...Lughaidh Corb from,..Cairpre Cluichechair mc Con Corb & Eithne Sithbaicce ingen side Óengusa Múisc
- Location - county, barony or townland: Munster
- Cinéal (Kinship): Dál Coirpri in Ara Cliach (Dál Coirpri Loingsic Beic)
Uí nEirc (Ui Maic Eirce)
- Clan name (Tuath): Uí nEirc (Ui Maic Eirce)
- Progenitor: Tuthal son of Muirithe, son of Maoltuile, son of Cuan, son of Conall, son of Grilline, son of Maoltuile son of Cuan, son of Conall, son of Grilline, son of Mac Eirc (a quo Ui Maic Eirce), son of Ailill Cennfada, son of Erc, son of Cairbre eabha, son of Brian, son of Fiacha Fidhgheinte (a quo Ui Fidhgeinte)
- Hereditary Chief or Clan chief: Ó Bruadar (BRODER, BRODERICK, BROTHERS)
- Septs (finte): Mac Braoin (BREEN, MacBREEN, BRUEN, BRUYN, BRYAN)
- Cinéal (Kinship): Osraighe
- Branches: Na Clanna (Mac Braoin)
Uí Duach
- Clan name (Tuath): Uí Duach
- Hereditary Chief or Clan chief: Ó Braonain (BRENNAN, BRANNAN, BRANNON)
- Location - county, barony or townland: Airgetros in Maigib Raigne, Fassadinin, Idough barony, Kilkenny.
- Cinéal (Kinship): Osraighe
- Branches: Clann Amhlaibh (Clan Awly of Ui Duach), Clann mic Conill, Clann c. mhic Kelowe, alias Clann mhic Gillenanaomh & Clann Muirchertaigh
Ui Berchon (Ui Bearrchon)
- Clan name (Tuath): Ui Berchon (Ui Bearrchon)
- Progenitor: Iachtchair, a descendant of Óengus Osrithe
- Hereditary Chief or Clan chief: Ó Callaidhe (O'Kelly, O'Kealy, O'Coely)
- Location - county, barony or townland: Old barony of Ibercon, forming the northern portion of the more modern barony of Ida (O'Donovan), in southeast Co. Kilkenny
- Cinéal (Kinship): Osraighe
Ui Cruinn (Uí Crinn, Uí Grine)
- Clan name (Tuath): Ui Cruinn (Uí Crinn, Uí Grine)
- Location - county, barony or townland: Medieval 'barony' of Igrin [modern barony of Ida], in southeast Co. Kilkenny
- Cinéal (Kinship): Dál Chormaic
Uí Fairchelláin
- Clan name (Tuath): Uí Fairchelláin
- Hereditary Chief or Clan chief: Ua hÚrachán (O'Horahan)
- Location - county, barony or townland: Parish of Offerlane, Co. Leix
- Cinéal (Kinship): Osraighe
Úi Scelláin
- Clan name (Tuath): Úi Scelláin
- Progenitor: Scellan, who was sixth in descent from Óengus Osrithe
- Hereditary Chief or Clan chief: Ó Sceallain (SCALLEN, SKALLEN, SKELLAN, SKELTON)
- Location - county, barony or townland: Hui Scellain was in Sliabh Mairge, the mountain district which, extending into Kilkenny from Carlow and Queen's County, embraced the Castlewarren, Johnswell, and Kilmogar hills, in the north of the Barony of Gowran
- Cinéal (Kinship): Osraighe
Tuath-an-Toraidh
- Clan name (Tuath): Tuath-an-Toraidh
- Hereditary Chief or Clan chief: Ua Dubhsláine (DELANEY, DELANE, DELANY, DULANE, DULANEY, O'Delany or O'Dulany)
- Location - county, barony or townland: Coill Uachtarach, barony of Upper Woods, Co. Leix
- Cinéal (Kinship): Osraighe
Úi Geintich
- Clan name (Tuath): Úi Geintich
- Hereditary Chief or Clan chief: Ua Donnachadha (Dunphy, O'Donochowe, O'Dunaghy, O'Donoghue, Donohoe, Donagh)
- Location - county, barony or townland: Ogenty [Ui-Geintigh, and Tir-Ua-nGentigh], Barony of Gowran, Co. Kilkenny.
- Cinéal (Kinship): Osraighe, [Mag Máil]
Fothairt in Chairn a.k.a. Fothar Tíre
- Clan name (Tuath): Fothairt in Chairn a.k.a. Fothar Tíre
- Progenitor: Sétna, the son of Artt Cerp, son of Cairbre Niad, son of Cormac Már, son of Óengus Mend, son of Eochaid Find Fuath n-Airtt, son of Feidhlimidh Reachtmhar, son of Tuathal Teachtmhar
- Hereditary Chief or Clan chief: Ó Lorcain (LARKIN, LARKAN, LARKEN, LARCOM, LARKING, LERKIN,)
- Location - county, barony or townland: Barony of Forth, Co. Wexford
- Cinéal (Kinship): Fotharta
- Branches: Fothairt Fili, Fothairt Tuile, Fothairt Maige Ítha (7 Aicme (tribes), viz., Ui Deaga, Ui Setna, Ui Dimai, Ui Eircc, Ui Chormaic, Ui Niath and Ui Duirrtheacht), Fothairt Imchlár oc Ard Macha & Fothairt Bile.
Fothairt Feadh a.k.a. Fotharta Osnadhaigh
- Clan name (Tuath): Fothairt Feadh a.k.a. Fotharta Osnadhaigh
- Progenitor: Dub Indrecht m. Fergusa m. Moínaig m. Fínáin m. Rónáin m. Echach m. Báeth m. Nannida m. Féicc m. Ier m. Cathbath m. Adnaich (a quo Fothairt) m. Airt Chirp m. m. Coirpri Niad, in descent from Cormac Már m. Óengusa Mind m. Eochaid Find Fuath n-Airtt m. Feidelmid Rechtada m. Thuathail Techtmair
- Hereditary Chief or Clan chief: Ó Nuallain (NOLAN, KNOWLAN- Laeghis)
- Septs (finte): Ó Bolguidhir (BOLGER, BULGER), Ó Cobthach (COFFEY, COFFEE, COFFIE), Ó Luinin (Lineen),
- Location - county, barony or townland: Barony of Forth, Co. Carlow
- Cinéal (Kinship): Fotharta
- Branches: Fothairt Airthir Liphi, Fotharta Airbrech fri Brí Ele aniar, and Fotharta Fer Cúl, Fothar Breg; alias Fothar Mac nDeichill of Bregia.
Beann Traidhe
- Clan name (Tuath): Beann Traidhe
- Progenitor: Cillíne m. Dochartaich m. Eóin m. Feromuin m. Aildíne m. Oirenn m. Mágach m. Cellaich Croto m. Nechta m. Lugna m. Inomuin m. Benta a quo Bentraige nominantur nó Benta filius Conchobuir m. Nessa ut alii dicunt m. Máil m. Formáil m. Sírnae m. Forich m. Rochada m. Clothnai m. Coirbb m. Sethrann m. Loga m. Cethnenn.
- Hereditary Chief or Clan chief: Ó Coigligh (O'Coskry, COGLEY, KEGLEY) Clann Cosgraigh (O'Coskry, Cosgry, Coskerry, Cosgrave)
- Septs (finte): Ó Beice (BECK, BEAKY, BAKEY), Ó Bogaigh (BUGGY BUGGEY, BOGGY), Ó Cluainaigh (CLOONEY, CLONEY)
- Cinéal (Kinship): Cruithin
Laeghis
- Clan name (Tuath): Laeghis
- Progenitor: Fachtna m. Milige a quo Baccán m. Brain m. Eircc h-Ubulchind m. Feidelmid mc Findchada m. Fiachach Uanchind m. Dáire m. Rossa m. Ogomain m. Fergusa Múlcheist m. Fachtna m. Milige m. Intait m. Lugdach Loíchsi m. Conaill Cernaich.
- Hereditary Chief or Clan chief: Ó Mordha (O'MORE, MOORE)
- Septs (finte): Mac Gaethin (GAHAN, MacGEEHAN, MAGEEHAN), Mac Ceadach (KEADY, KEADIE, KEDDY, KEEDIE, KEEDY, MACKEADY), Ó Leathlobhar (LALOR, LAWLOR), Ó hArraghain (HARRIGAN, HARAGHAN, HARAHAN), Ó Liathain, Mac Laoidhigh (LEE, MacLEA, MacLEE), Ó Suaird (SWORDS SORD, SOURDES, SUARD), Ó Broithe (BROPHY, BROFIE), Ó Casain (CASHIN, KISSANE), Ó Deoradhain (DORAN, DORRIAN), Ó Dunlaing (DOWLING), Ó Duibhgainn (Deegan),
- Location - county, barony or townland: Co. Laois
- Cinéal (Kinship): Laeghis
Cinel Crimthann
- Clan name (Tuath): Cinel Crimthann
- Hereditary Chief or Clan chief: Ó Duibh (DUFF, DUFFY)
- Septs (finte): Ó Dubhuidhe (Deevy or Devoy), Ó hIndreadhain (HOURIHAN)
- Location - county, barony or townland: Ballyduff, Stradbally, Co. Laois. Lord of Creamhthainn (i.e. Maryborough)
- Cinéal (Kinship): Laeghis
- Branches: Ui Crimthainn Áin (O'Devoy)
Ui Mic Uais Breagh a.k.a. Muintir Fhiodhbhuide
- Clan name (Tuath): Ui Mic Uais Breagh a.k.a. Muintir Fhiodhbhuide
- Progenitor:
- Hereditary Chief or Clan chief: Mac Fhiodh bhuidhe (McEvoy)
- Septs (finte): Ó hIffernain (HEFFERNAN, HIFFERNANE)
- Location - county, barony or townland: Mountrath, Co. Laois
- Cinéal (Kinship): Laeghis
- Branches: Clan Crecain (Ó hIffernain)
Ui Meith Macha alias Ui-Meith Tire
- Clan name (Tuath): Ui Meith Macha alias Ui-Meith Tire
- Progenitor: Imar m. Muircertaich m. Duibdarac m. Scannlain m. Indrachtaich m. Gairbid m. Ainbeith m. Mailbrigti m. Duibinnracht m. Taidg m. Innreachtaich m. Muiredaich m. Mailimuchair m. Scannlain m. Fingin m. Aedha m. Fiachrach m. Fiachrach m. Eogain m. Briuin m. Muiredaic Meith (a quo H. Meith) m. Imcadha m. Colla Da Crich m. Eachach Doimlen.
- Hereditary Chief or Clan chief: Ó hInnreachtaigh (O'Hanratty)
- Septs (finte): Ó hAinfeith (HANVEY, HANNAY, HANNEY), Ó Mael Brigdhe (MULREADY, MULBREEDY, MULBRIDE, MULREEDY, MURREADY, MULREDDY), Ó Gairbith (GARVEY), Ó hUarghuis (HORISH, HORISKY, HOURISKEY, WHORISKEY, WATERS, CALDWELL), Ó Beice (BECK, BEAKY, BAKEY), Ó Mearain (MARRON MARRAN, MARRANE, MARREN, MEARN), Ó Smollain (SMOLLEN, SMULLEN),
- Location - county, barony or townland: Barony of Monaghan, in the County of Monaghan
- Cinéal (Kinship): Síl Colla Focrích
- Branches: Ui-Seaain (Ó hAinfeith), Ui-Meath-Mara [Omeath]
Fernmag, or Fer Fernmaighe [Farney]
- Clan name (Tuath): Fernmag, or Fer Fernmaighe [Farney]
- Progenitor: Lethlobor m. Fogartaig m. Muiredaig m. Laidgnen m. Fogartaig m. Donnacain m. Fogartaig m. Ruadrach m. Mailfothardaig m. Arthraich m. Aithechda m. Mailduib m. Mailfothardaig m. Cronain m. Fergusa m. Nadsluaig m. Daim argait m. Echach m. Cremthaind Leith m. Feicc m. Dega Duirn m. Rochatha m. Colla Fochrich m. Echdach Doimlen.
- Hereditary Chief or Clan chief: Ó Ciaráin (O'Kieran)
- Septs (finte): Uí Chríochain (O'Creehan, CREHAN, CREIGHTON, CRICHTON, Uí Lorcáin, Mac Cuilinn (MacQUILLAN, CULLEN, COLLINS), Ó Donnagan (DONEGAN, DONNEGAN, DONNEGANE), Ó Merligh (MARLEY, MARLIE), Ó Daimhin (DEVINE, DEVANE, DEVIN), Ó Dubhruis (DOORISH, DORISH, DORIS, DOURISH), Ó Feadagain (FEDEGAN FADDIGAN, FEDDIGAN), Ó Callada (KELLEDY KALLADIE, KEELEDIE, KELEEDY), Ó Leanain (Leynan), Ó Luain (ÓLOAN, LOON, LUAN, LAMB), Ó Maoilfhinn (MALINN MALLIN, MALYNN, MILLYNN, MULLIN), Ó Marcaigh (MARKEY MARKAY, RIDER, RYDER), Mac Uaid (MacQUAID MacQUADE), Ó Reannachain (RENEHAN RENAGHAN, RENIGHANE, RONAGHAN), Mac Ruari (RORY MacGRORY, MacRURY), Mac Sceachain (SKEHAN SKEEHAN, THORNTON), Mac Soilligh (SOLLY, SOLLEY, SOLEY, SULLY), Ó Tuathail (Toal), Ó Tomaltach (TUMELTY, TOMALTY), Mac Cuairt (MacCOURT, COURTNEY), Mac Raghiallaigh (CRILLY, CROLY, CROLLY),
- Location - county, barony or townland: Barony of Farney, Co. Monaghan.
- Cinéal (Kinship): Cenél Rochada, Síl Colla Focrích
Clann Lugainn
- Clan name (Tuath): Clann Lugainn
- Progenitor: Lugain, son of Irgalach, son of Eignich, son of Cormac, son of Fergus, son of Aed, son of Cormac, son of Cairpre Dam Argait. Daim Argait (Corpri) son of Echach son of Cremthaind Leith son of Feicc son of Dega Duirn son of Rochatha son of Colla Fochríth
- Hereditary Chief or Clan chief: Mag Uidhir (MAGUIRE, McGUIRE, GUIRE, GUIREY, QUIREY) Meicc h-Uidir
- Septs (finte): Ó hEgneach (HEANY, BIRD, HEENY, HEGNEY, HIGNY), Ó Dubhdhara (DARRAGH, DARRA, DARROUGH, OAKS), Mac Maghnuis (McManus), Mac Gafraidh (MacCaffrey, Godfrey), Mac Gothraidh (MacCORRY MacGORRY, GODFREY, GOHERY, GOFFREY), MacAmhlaimh (MacAuley), Mac Asidha (Cassidy), Mac Gilla Uidhir (MacALEAR, MacELEER), Mac Carmaic (MacCORMACK), Mac Aodh (MacGEE, GEE, MAGEE), Mac Ailghile (LILLY CALILLY, LELY, LILLIE, MacALILLY, MacALYLY), Mac Lochlainn (LOUGHLIN MacLACHLAN), MacMurchadha (MacMORROW, Morrow, Murrow -Clann Aodh), Mac Giolla Iosa (MacALEESE GILEECE, MacLEECE), Mac Con Uladh (MacANALLY, COWLEY, CULLOO), Mac Braoin (BREEN, MacBREEN),
- Location - county, barony or townland: Co. Fermanagh
- Cinéal (Kinship): Síl Daim Argait (Uí Cremthainn)
Muintir Pheodachain (or Muintir Feodachain)
- Clan name (Tuath): Muintir Pheodachain (or Muintir Feodachain)
- Progenitor: Cormac, son of Cairpre Dam Argait
- Hereditary Chief or Clan chief: Mac Giolla Finnein (MacALINION, GILLEEN, GLENDON, LEONARD)
- Location - county, barony or townland:
- Cinéal (Kinship): Síl Daim Argait (Uí Cremthainn)
Muintir Caeman
- Clan name (Tuath): Muintir Caeman
- Progenitor: Cormac, son of Cairpre Dam Argait
- Cinéal (Kinship): Síl Daim Argait (Uí Cremthainn)
Clann Fergaile
- Clan name (Tuath): Clann Fergaile
- Progenitor: Cormac, son of Cairpre Dam Argait
- Hereditary Chief or Clan chief: Ó Baoigheallain (BOYLAN, BOYLAND)
- Septs (finte): Mac Giolla Coisgle (CUSKELLY, CUSKLEY, CUSKERY, MacCUSHELY, QUISKELLY, QUOSKLY),
- Cinéal (Kinship): Síl Daim Argait (Uí Cremthainn)
Sil nDaimine
- Clan name (Tuath): Sil nDaimine
- Progenitor: Daimíne, son of Cairpre Dam Argait, son of Eocho, son of Crimthann Lethan, son of Fiacc, son of Daig Duirn, son of Rochaid, son of Colla Fochríth (da-Chrioch).
- Hereditary Chief or Clan chief: O'Maolruanaidh (Mulrooney)
- Location - county, barony or townland: Co. Fermanagh
- Cinéal (Kinship): Síl Daim Argait, Uí Chremthaind
Síl Tuathail an Tuaiscirt a.k.a. Fir Leamhna
- Clan name (Tuath): Síl Tuathail an Tuaiscirt a.k.a. Fir Leamhna
- Progenitor: Tuathal, son of Daimíne (a quo Síl Daimini), son of Cairpre Damargait, son of Echach, son of Crimthann, son of Fiacc, son of Daig Duirn, son of Rochaid, son of Colla Fochríth
- Hereditary Chief or Clan chief: Ó Caomhain
- Location - county, barony or townland: Clogher (Clochar mac nDaimin) in modern county Tyrone.
- Cinéal (Kinship): Síl Daim Argait (Uí Cremthainn)
Clan Ceallaigh
- Clan name (Tuath): Clan Ceallaigh
- Progenitor: Daimine, son of Cairpre Dam Argait
- Hereditary Chief or Clan chief: Mac Domhnaill (MacDONNELL)
- Septs (finte): Ó Flanagain (Flanagan)
- Location - county, barony or townland: Lord of Clankelly, Lisnaskea, Fermanagh
- Cinéal (Kinship): Síl Daim Argait (Uí Cremthainn)
Clann Nadsluaigh
- Clan name (Tuath): Clann Nadsluaigh
- Progenitor: Nadsluaigh, son of Cairpre Dam Argait, son of Eocho, son of Crimthann Lethan, son of Fiacc, son of Daig Duirn, son of Rochaid, son of Colla Fochríth (da-Chrioch)
- Hereditary Chief or Clan chief: Mac Mathghamna (MacMAHON, MacMAHAN, MAGHAN)
- Septs (finte): Mac Íomhar (MacGiver, KEEVER MacKEEVER, MACEVER, MACKEVER, KEVER), Mac Ardghail (MacARDLE, ARDALL, MacCARDLE, CARDWELL), Mac Bradaigh (Brady), Ó Cearbhail (CARROLL, CAROOL), Mac Pilib (MacPHILLIPS)
- Location - county, barony or townland: Clones, Co. Monaghan
- Cinéal (Kinship): Síl Daim Argait
- Branches: McMahon (MacArtghail, MacIomhar & MacPilib), O'Carroll (Mac Bradaigh).
Uí Briúin Archaille
- Clan name (Tuath): Uí Briúin Archaille
- Progenitor: Brian son of Daig Duirn son of Rochaid son of Colla Fochríth
- Hereditary Chief or Clan chief: Ua Tuamain
- Septs (finte): Barony of Dungannon, co. Tyrone, which is located on the western side of Lough Neagh.
- Location - county, barony or townland: Co. Fermanagh
- Cinéal (Kinship): Síl Daim Argait (Uí Cremthainn)
Uí Labrada
- Clan name (Tuath): Uí Labrada
- Location - county, barony or townland: Co. Fermanagh
- Cinéal (Kinship): Cenél Rochada
Dál n-Oaich
- Clan name (Tuath): Dál n-Oaich
- Progenitor: Crimthann Oach, son of Fiacc, son of Daig Duirn, son of Rochaid, son of Colla Fochríth
- Location - county, barony or townland: Co. Fermanagh
- Cinéal (Kinship): Cenél Rochada
Uí Meic Brócc
- Clan name (Tuath): Uí Meic Brócc
- Progenitor: Echdach Amainsen, son of Crimthann, son of Fiacc, son of Daig Duirn, son of Rochaid, son of Colla Fochríth
- Location - county, barony or townland: Co. Fermanagh
- Cinéal (Kinship): Cenél Rochada
Úa Bresail Airthir [Orior]
- Clan name (Tuath): Úa Bresail Airthir [Orior]
- Progenitor: Buachalla m. Conchobuir Corraig m. Máel Dúin m. Fíngin m. Rónáin m. Tuathail m. Ailella m. Conaill m. Féicc m. Bressail m. Feidelmid m. Fiachrach Cassáin m. Collai Fochríth.
- Hereditary Chief or Clan chief: Ó Céalecháin (KEALAGHAN, KEALAHAN, KEELAGHAN)
- Septs (finte): Ó Cernachain (KERNAGHAN, KEARNAGHAN), Ó Madadhain (Madigan), Ó Tréinfhir (TRAINOR TRAINER, TRAYNER), Mac Acadain (MacCADDEN, CADIGAN, MacADAM, MacADAN), Ó Caisile (CASSILY CASHEL, CASLEY, CASSELL, CASSELY, CUSHLEY), Ó Dalachain (DULLAHAN, DALLAGHAN, DALLAHAN, DALLAN, DOLOGHAN),
- Location - county, barony or townland: Northern Armagh
- Cinéal (Kinship): Airthir, Síl Fiachra Cassán
- Branches: Clann Fermaighe (Mac Acadain), Muintir Caiseil
Úa Bresail Macha
- Clan name (Tuath): Úa Bresail Macha
- Progenitor: Cummascaig m. Conchobuir Chorraig m. Mailduin m. Finghin m. Ronain m. Thuathail m. Ailella m. Conaill m. Feicc m. Bressail m. Feidlimthe m. Fiachach m. Colla Fochrich.
- Hereditary Chief or Clan chief: Ó Gairbith (GARVEY)
- Septs (finte): Ó Gabhain (GOAN, SMITH, SMYTH), Ó Cairregain (KERRIGAN, CARRIGAN, CARAGHAN, CARAHAN),
- Location - county, barony or townland: Northern Armagh
- Cinéal (Kinship): Airthir
Uí Echdach alias Ui Eachach Orior
- Clan name (Tuath): Uí Echdach alias Ui Eachach Orior
- Progenitor: Murcad m. Ruaidri m. Muiredaich m. Ailella m. Cumascaigh m. Echadon m. Ruadacan m. Cellaich m. Ruadrach m. Conmaeil m. Airmedaich m. Feradaich m. Amalga m. Aililla m. Echach m. Feidlimthe m. Fiachrach m. Colla Da Crich.
- Hereditary Chief or Clan chief: Ó Ruadhacain (ROGAN, REDEGAN, ROHAGAN, ROOGAN, RODAGHAN)
- Septs (finte): Ó Domhnaill (DONNELL), Mag Labhradha (GLORY, GLORNEY, MAGLORY, MacGLORY, MacLAVERY, LAVERY, MacLOWRY), Ó hAileagain (HALLAHAN, HALLIGAN, HOLLEGANE, HOLLIGAN),
- Location - county, barony or townland: Northern Armagh
- Cinéal (Kinship): Airthir
- Branches: Síl Ciarain Ua nEchach, Clann-Ruadhagain
Uí Nialláin (Clan Cernaich)
- Clan name (Tuath): Uí Nialláin (Clan Cernaich)
- Progenitor: Nialláin m. Féicc m. Feidelmid m. Fiachrach Cassáin m. Collai Fochríth.
- Hereditary Chief or Clan chief: Ua hAnluain (O'Hanlon)
- Septs (finte): ÓLorcain (LARKIN, LORKING, LORCAN, LORCAYNE, LURKAN, LURKAYNE), Ó hUidhrin (Herane), Ó hAedhagain (HEGAN EAKIN, EAKEN, HAGAN), Ó Muanain (MOYNAN MONAN, MONANE, MONAYNE, MONYNE, MOONAN, MOYNE), Mac Riabhaigh (MacREEVY MacCREVEY, MacGREEVEY), O Catharnaighe (Mac an tSionnaigh, (FOX), Carney, TINNEY, MacASHEENY, MacATINNEY, ÓTINNEY, TINNY), Mac Gilla Fhiondain (MacALINDON), Ó Cearnaigh (CARNEY, CARNY), Mac Concaille (MacCONKEEL, MacENHILL, WOODS), Ó Foirredh (FUREY, FURY), Ó hEoir (HAIRE HAIR, HARE)
- Location - county, barony or townland: The baronies of Oneilland East and West in modern county Armagh. O'Catharnaighe, Sionnach, Fox, Teathba, Kilcoursey, Offaly.
- Cinéal (Kinship): Airthir
Sources:
- Annals of the Four Masters
- History of Clan Fox
- History of Ireland
Uí Dorrthainn (alias Ui Dorthinn, Dorthaind, Dorethainn, Tortain)
- Clan name (Tuath): Uí Dorrthainn (alias Ui Dorthinn, Dorthaind, Dorethainn, Tortain)
- Progenitor: Dorthon, son of Fiacc, son of Feideilmid, son of Fiachra Cassán, son of Colla Fochríth
- Hereditary Chief or Clan chief: Maelan Gae Mor
- Septs (finte): O'Maelan (MULLAN, MULLEN, MULLIN)
- Location - county, barony or townland: Brechmag, centered perhaps near Ardbraccan, 2 miles west of Navan, co. Meath
- Cinéal (Kinship): Airthir
Uí Tréna
- Clan name (Tuath): Uí Tréna
- Progenitor: Trian son of Feidhlimidh, son of Fiachra Cassan, son of Colla Da Crich.
- Location - county, barony or townland: Co. Armagh
- Cinéal (Kinship): Síl Fiachra Cassán
- Branches: Craebh Carthaind
Uí Eochada
- Clan name (Tuath): Uí Eochada
- Progenitor: Fiachra Cassan, son of Colla Da Crich.
- Location - county, barony or townland: Co. Armagh
- Cinéal (Kinship): Síl Fiachra Cassán
Uí Cruind
- Clan name (Tuath): Uí Cruind
- Progenitor: Fiachra Cassan, son of Colla Da Crich.
- Location - county, barony or townland: Co. Armagh
- Cinéal (Kinship): Síl Fiachra Cassán
Uí Maic Caírthinn alias Cenél Meic Cárthind
- Clan name (Tuath): Uí Maic Caírthinn alias Cenél Meic Cárthind
- Progenitor: Cairthand (a quo H. Mc. Carthaind), son of Eichin, son of Bec (ri Airgiall) m. Cuanach m. mc. Dairi mc. Feidhlimidh mc. Echin mc. Fiacrach Tort mc. Echach mc. Colla Uais
- Hereditary Chief or Clan chief: Ó Cochlainn (COLGAN)
- Septs (finte): Ó Conghaile (Connell),Ó Cein (KEENE, KEEN, KAIN, KANE), Mac Giolla Michill (MacMEEL MacGILMIHILL, MacGILMICHILL, MITCHELL)
- Location - county, barony or townland: Lough Foyle, Tirkeeran, County Londonderry,
- Cinéal (Kinship): Uí Meic Uais, Síl Colla Uais
- Branches: Clan Conghail (Mac Giolla Michill)
Ui Tuirtre
- Clan name (Tuath): Ui Tuirtre
- Progenitor: Floind (otait Ui Loind) m. Muiredaig m. Indrachtaigh m. Reachtabrat m. Mailcraibhi m. Mailfotartaigh m. Suibni m. Furodran m. Bece m. Cuanach m. Dairi m. Feidhlimthe m. Fechin m. Fiacrach Tuirtri m. Eachach m. Colla Uais.
- Hereditary Chief or Clan chief: Mac Fhloinn (O'Flynn or O'Lynn)
- Septs (finte): Ó Foirbhithe (FURPHY, FURFIE, FURPHEY, FURVEY), Ó hUid (HOOD HOUD, HUDE, MacHOOD, MAHOOD, ÓHOUD), Ó Maelruanaidh (MULROONEY, MULRONEY, MURRONY), Ó Domhnaillain (DONNELLAN, DONELAN),
- Location - county, barony or townland: West of Lough Neagh (in modern County Tyrone), as well as northwest of the great Lough in the modern barony of Loughinsholin, County Londonderry.
- Cinéal (Kinship): Uí Meic Uais, Síl Colla Uais
Uí Mac Uais Mide
- Clan name (Tuath): Uí Mac Uais Mide
- Progenitor: Colla Uais.
- Hereditary Chief or Clan chief: Ua Comhraidhe (O'Curry)
- Location - county, barony or townland: Moygoish barony, co. Westmeath)
- Cinéal (Kinship): Uí Meic Uais, Síl Colla Uais
Uí Mac Uais Breg
- Clan name (Tuath): Uí Mac Uais Breg
- Progenitor: Colla Uais.
- Hereditary Chief or Clan chief: ÓhInnascaigh (Ennis)
- Septs (finte): Ó Minnegain (MINNEGAN, MINNICAN), Ó Cormaidhe (CORMIE CORMY, CORMEY, COOMIE, CUMEY), Ó Dubheoin (DEVINE, DEVANE, DEVIN),
- Location - county, barony or townland: Upper Kells/Lower Navan baronies, co. Meath
- Cinéal (Kinship): Uí Meic Uais, Síl Colla Uais
Cenel mBecce
- Clan name (Tuath): Cenel mBecce
- Progenitor: Suibni (a quo Cenel mBece) mc. Mailodrain mc. Suibne mc. Bec mc. Cuanach mc. Dairi mc. Feidhlimidh mc. Echin mc. Fiacrach Tort mc. Echach mc. Colla Uais
- Location - county, barony or townland:
- Cinéal (Kinship): Síl Colla Uais
Uí Dáire
- Clan name (Tuath): Uí Dáire
- Location - county, barony or townland:
- Cinéal (Kinship): Síl Colla Uais
Uí Cormaic
- Clan name (Tuath): Uí Cormaic
- Progenitor: Brion, son of Echach, son of Colla Uais
- Cinéal (Kinship): Síl Colla Uais
Mac Murchadha
- Clan name (Tuath): Mac Murchadha
- Progenitor: Murcha or Murchadha
- Hereditary Chief or Clan chief: MacMurchadha (MacMorough, MacMorrow, Morrow, Moroghoe)
- Septs (finte): MacMurcha, MacMurchadha, Ó Murchadha (MORROW, MURROW, MacMORROW, MOROGHOE, MOROGHOW, MORROWSON, MURPHY, MacMURRAY, MacMORAY)
- Location - county, barony or townland: Ulster, Leinster and Scotland
- Cinéal (Kinship): Uí Ceinnselaig
- Branches: Morrow, MacMurrough, MacMurray (MacMoray), Kavanagh, Murphy[1][2]
Mac Dhuibhinse
- Clan name (Tuath): Mac Dhuibhinse
- Septs (finte): Mac D(h)uibhinse
- Septs (finte): Mac Avinch(e)y, MacAvinch(e)y, Macavinchey, Mcavinch(e)y, Mc Avinch(e)y - Translated as derived of Mac D(h)uibhinse
- Septs (finte): Mc Aninch, McIninch, McNinch - The descendant of Mac D(h)uibhinse (To be confirmed)
- Septs (finte): Vincent - Adopted
- Location - county, barony or townland: Ulster, Counties Armagh, Londonderry, Monaghan, Tyrone
- Cinéal (Parenté)(Kinship):
- Location - county, barony or townland: Dublin (1600s)
- Cinéal (Parenté)(Kinship):
- Location - county, barony or townland: Limerick (1600s)
- Cinéal (Parenté)(Kinship):
- Extra: The Son of the man from the black island and/or Son of Black man of the Island and/or Son of the dark man of the island and/or Son of the Black Island
- Extra: "Son D(h)uibhinse", a given name meaning "black island"
- Extra: An alternative, more colloquial nickname might apparently be "The Goat-Like One"
- Extra: Mac Avinchey - Irish / Mac Dhuibhinse - dubh / black - innis / island. A Sept / Family branch, who had their territory in Counties Armagh, Londonderry and Tyrone in the Ulster Province. Also changed to Vincent there.
- Extra: The older record I found is Mcavinchey, Annie
Mac Craith (McGrath)
- Clan name (Tuath): McGrath
- Progenitor:Echthighern (brother of Brian Boru)
- Hereditary Chief or Clan chief:Dan McGrath
- Septs (finte): Thomond
- Location - county, barony or townland:Munster
See also
References
- Irish Pedigrees; or the Origin and Stem of the Irish Nation by John O'Hart: MacMorough family pedigree
- Dr. John Thomas Morrow, The Morrows and related families
- Ireland's History in Maps - Tuath and Territory Index
- Ireland's HIstory in Maps - the Northern Ui Neill
- Leabhar na nGenealach: The Great Book of Irish Genealogies. De Búrca Books, Dublin, 2004. Edited by Nollaig Ó Muraíle.
- T.H. Mullin and J.E. Mullin (1966). "The Ulster Clans", North-West Books
- Robert Bell (1988) . "The Book of Ulster Surnames", The Black Staff Press