Peter I, Duke of Brittany

Peter I (French: Pierre; c. 1187 – 26 May 1250), also known as Peter Mauclerc, was Duke of Brittany jure uxoris from 1213 to 1221, and regent of the duchy for his minor son John I from 1221 to 1237. As duke he was also 1st Earl of Richmond from 1218 to 1235.

Peter I
Peter represented on a window in Chartes Cathedral
Duke of Brittany
Reign1213–1221 (as duke)
1221–1237 (as regent)
PredecessorAlix
SuccessorJohn I
Co-rulerAlix
Bornc. 1187
Died26 May 1250 (aged 63)
SpouseAlix, Duchess of Brittany
Nicole
Margaret of Commequiers
IssueJohn I, Duke of Brittany
Yolande, Countess of Penthièvre
Arthur
Oliver I of Machecoul
HouseDreux
FatherRobert II, Count of Dreux
MotherYolande de Coucy
ReligionRoman Catholicism
Coat of Arms of Peter I, Duke of Brittany and his successors.

Origins

Peter was the second son of Robert II, Count of Dreux and Yolande de Coucy.[1] The latter was in turn the son of Robert I, Count of Dreux, a younger brother of Louis VII of France. Peter was thus a Capetian, a second cousin of Louis VIII of France.

Despite being of royal descent, as the younger son of a cadet branch Peter's early prospects were that of a minor noble, with a few scattered fiefs in the Île-de-France and Champagne. He was initially destined for a career in the clergy, which he later renounced, earning him the nickname Mauclerc (French: mauvais clerc, bad-cleric). He broke the convention of ecclesiastical heraldry by placing on the canton of his paternal arms the ermine, then reserved for the clergy.

Accession

In 1212 King Philip II of France needed to find a weak and faithful ruler for Brittany. The duchy lay athwart the sea lanes between England and the English territories in Gascony. Furthermore, it bordered on Anjou and Normandy, which the English had lost ten or twelve years before and were eager to recover. It was being ruled with less than a strong hand by Guy of Thouars, as regent for his young daughter Alix. Also worrisome was that Alix's older half-sister Eleanor, Fair Maid of Brittany, was in an English prison.

King Philip thus broke off the betrothal of Alix and the Breton lord Henry of Penthièvre, and turned to his French cousin Peter, then in his early twenties. Peter married Alix, and on 27 January 1213, paid homage to the king for Brittany.

There is some ambiguity regarding whether Peter should be considered duke or count. The duchy was legally held by his wife. The King of France and the Pope (and their courts) always addressed him as count, but Peter in his own charters called himself duke.

Relations with the English

In 1214 King John of England had assembled a formidable coalition against the French. He landed in Poitou while King Otto of Germany prepared to invade from the north. John chased off some French forces in the north of Poitou, and then moved to the southern edge of Brittany, opposite Nantes. Peter drove him off after a brief skirmish but did nothing to hinder John's subsequent movement up the Loire valley where he took a few Breton fortresses and then besieged La Roche-aux-Moines. John's Poitevin vassals, however, refused to fight against a French force led by the King of France's son Louis. Meanwhile, Otto's army was crushed at Bouvines, and the entire invasion foundered.

It is not clear why John attempted to capture Nantes, even less why he would do so the hardest way, via the very well-defended bridge across the Loire. Nor is it clear why Peter declined to harass his forces from the rear as John marched east. A likely explanation is that the two had come to some sort of agreement whereby John would leave Brittany alone for the moment, and in return the Bretons would not hinder him elsewhere.

John had a prize he could dangle in front of Peter: the Earldom of Richmond. This great English honour (land) had traditionally been held by the dukes of Brittany, and in fact a constant theme in Peter's political affairs was the desire to hold and retain the English revenues from Richmond.

Peter of Dreux

Peter did not yield to King John's offers to accept the earldom and take up the King's side in his conflicts with the English barons, probably because he deemed the King's prospects too uncertain. Moreover, Louis was again fighting against the English. But when Louis was defeated, Peter was sent as one of the negotiators for a peace treaty. After the negotiations were completed (in 1218), William Marshal, the regent for the young Henry III of England, recognized Peter as Earl of Richmond, in place of Eleanor of Brittany who, as a potential threat to English crown, would never be released from imprisonment. The center of the earldom's properties in Yorkshire was in the hands of the Earl of Chester, whom the regent could not afford to antagonize, but Peter did receive the properties of the earldom outside of Yorkshire, which in fact generated the bulk of the earldom's income. In 1219 he participated in the capture of Marmande and the Siege of Toulouse during the Albigensian Crusade.

Consolidation of power

Peter turned his attention to his next goal. The authority of the dukes of Brittany had traditionally been weak, in comparison to the great peers of northern France. For example, the duke could not limit the building of castles by his counts. Nor did he have the right to guardianship of minor heirs of his vassals. Peter aimed to re-establish his relationship with his vassals (or subjects) more along the lines of what he knew from the Capetian royal court. To that end Peter simply declared new rules by fiat, and then faced the inevitable turmoil that resulted from the reaction of his barons. There followed a series of small civil wars and political maneuverings. In 1222 he suppressed a revolt by Breton barons in the Battle of Châteaubriant. By 1223, the barons had all acquiesced to the changes or been dispossessed.

The six Breton bishops were the other threat to the ducal power, for they had substantial landholdings (including control of all or part of the few cities in Brittany), and were recalcitrant in the face of Peter's attempts to raise revenues by increasing taxes or simply taking possession of episcopal holdings. For this he was excommunicated for a time in 1219–1221. Peter submitted in the end, but this was not to be the last of his conflict with the bishops.

Regency

Peter's wife died on 21 October 1221, leaving behind four young children. She was then only 21, and little is known about her beyond the basic genealogical facts. Her death meant that Peter was no longer duke, although he continued to rule the Duchy with undiminished authority, as regent for his son John, then a boy of four or so.

Alix's death changed Peter's goals in two ways. First, he aimed to acquire some additional territory, not part of the Duchy, to augment his retirement after his son came of age. Second, there was a strong tradition in France that a minor heir should, when coming of age, have his property in the state it was in when he inherited it. Thus Peter could not now take some risks without fear of harming the prospects of his son.

Peter helped Philip II's successor, Louis VIII, in his fight against Henry III of England (in the sieges of Niort and La Rochelle in 1224). He also accompanied Louis VIII by joining the Albigensian Crusade, but with the latter's death, he participated, with Count Theobald IV of Champagne and Count Hugh X of La Marche, in rebellions against the regent Blanche of Castile, between 1227 and 1234.[2] Around this time he renounced his allegiance to the king of England and suffered forfeiture of his English earldom.[3]

Crusades and death

Peter's son John reached the age of majority in 1237. Peter Mauclerc then participated in the Barons' Crusade to the Holy Land in 1239. While there, Peter's troops along with some local knights were attacked by heavily armed Mamluk cavalry, firing their bows, but the crusader force managed to outflank and defeat them, taking a few prisoners with them back to Jaffa.

In early November, two days into a march from Acre to Ascalon, Peter and his lieutenant Raoul de Soissons split off from the main force to conduct a raid. They divided their force in half and each waited in ambush along a possible route for the Muslim caravan which was moving up the Jordan to Damascus. Peter's half clashed with the Muslims outside of a castle, and after some fighting, he sounded his horn to summon Raoul. The Muslims were routed and fled inside the castle, where Peter's men followed them, killed many, took some captives, and seized the booty and edible animals of the caravan.[4] This minor victory would soon be overshadowed by a serious defeat at Gaza.

Back in France, he won some success against the English at sea in 1242 and 1243. In 1249, he participated in the Seventh Crusade to Egypt under King Louis IX. He died at the sea before he was able to return home. He was buried in Braine, France.

Marriages and children
Braisne Abbey in Aisne, Saint-Yved de Braine, the necropolis of the Counts of Dreux where Peter I is buried.

Peter was married three times:

His first wife was Alix of Thouars, Duchess of Brittany (1201-1221).[1] Alix and Peter had three children:

His second wife was Nicole (died February 1232). Nicole and Peter had a son:

  • Oliver de Braine [lower-alpha 1] (1231-1279), who inherited the Lordship of Machecoul (became Oliver I of Machecoul and founded the Machecoul branch of the House of Dreux).

His third wife was Marguerite de Montaigu, Lady of Montaigu, Commequiers, La Garnache[lower-alpha 2] then Machecoul,[lower-alpha 3] and widow of Hugh I de Thouars (died 1230), a brother to Guy of Thouars; this made Marguerite a paternal line aunt of Alix. They married by 1236, and had no issue.

Ancestry

Notes
  1. Braine refers possibly to Braine, Aisne
  2. The communities of Montaigu, Commequiers, and La Garnache are all in the Vendee.
  3. Machecoul is in the Loire Atlantique and borders the Vendee.
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References
  1. Jackson-Laufer 1999, p. 19.
  2. Puylaurens 2003, p. 81 n168.
  3.  One or more of the preceding sentences incorporates text from a publication now in the public domain: McNeill, Ronald John (1911). "Richmond, Earls and Dukes of". In Chisholm, Hugh (ed.). Encyclopædia Britannica. 23 (11th ed.). Cambridge University Press. p. 308.
  4. Painter 1969, p. 473-475.

Bibliography
  • Jackson-Laufer, Guida Myrl (1999). Women Rulers Throughout the Ages: An Illustrated Guide. ABC-CLIO.CS1 maint: ref=harv (link)
  • Painter, Sidney (1969). "The Crusade of Theobald of Champagne and Richard of Cornwall, 1239–1241". In Robert Lee Wolff; Harry W. Hazard (eds.). A History of the Crusades, Volume II: The Later Crusades, 1189–1311. Madison: University of Wisconsin Press.
  • Puylaurens, William of (2003). The Chronicle of William of Puylaurens: The Albigensian Crusade and its Aftermath. Translated by Sibly, W.A.; Sibly, M.D. Boydell Press.CS1 maint: ref=harv (link)

Further reading
Peter I, Duke of Brittany
Cadet branch of the Capetian Dynasty
Born: circa 1187 Died: 26 May 1250
Regnal titles
Preceded by
Alix		 Duke of Brittany
1213–1221
with Alix		 Succeeded by
John I
Peerage of England
Vacant
Title last held by
Eleanor of Brittany		 Earl of Richmond
1218–1235		 Vacant
Title next held by
Peter of Savoy
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