Koga Domain

Koga Domain (古河藩, Koga-han) was a feudal domain under the Tokugawa shogunate of Edo period Japan. It is located in Shimōsa Province, Honshū. The domain was centered at Koga Castle,[1] located in what is the city of Koga in Ibaraki Prefecture.

Site of Koga Castle, administrative headquarters of Koga Domain

History

During the Muromachi period, Koga was the seat of the Kantō kubō, under the Ashikaga clan, who vied with the Uesugi clan and with the Later Hōjō clan for control of eastern Japan. Ashikaga Ujinohime was the last Koga-kubo and owner of Koga domain of the Ashikaga lineage.

When Toyotomi Hideyoshi defeated the Hōjō at the Siege of Odawara, the area fell into his hands, and was subsequently assigned (along with the rest of the Kantō region) to Tokugawa Ieyasu. Ieyasu assigned Koga Castle to his grandson-in-law, Ogasawara Hidemasa as daimyō of Koga Domain, with assessed kokudaka of 30,000 koku.

Afterwards, the domain was reassigned every couple of generations to a large number of fudai daimyō clans, spending the longest time under the control of the Doi clan (1633–1681, 1762–1871).

During the Boshin War, the Tokugawa shogunate ordered the domain to provide guards on the foreign settlement at Yokohama. However, the domain capitulated almost immediately on the approach of the imperial forces. The final daimyō of Koga, Doi Toshitomo, served as domain governor until 1871, and was awarded the title of shishaku (marquis) under the kazoku peerage system. Koga Domain subsequently became part of Ibaraki Prefecture.

Bakumatsu period holdings

As with most domains in the han system, Koga Domain consisted of several discontinuous territories calculated to provide the assigned kokudaka, based on periodic cadastral surveys and projected agricultural yields.[2][3]

List of daimyōs
    #NameTenureCourtesy titleCourt RankkokudakaNotes
    Ogasawara clan (fudai) 1590–1601
    1Ogasawara Hidemasa (小笠原秀政)1590–1601Hyōbu-daifu (兵部大輔)Lower 5th (従五位下)30,000 kokutransfer to Iida Domain
    Toda-Matsudaira clan (fudai) 1602–1612
    1Matsudaira Yasunaga (松平康長)1602–1612Tamba-no-kami (丹波守)Lower 4th (従四位下)20,000 kokutransfer to Kasama Domain
    Ogasawara clan (fudai) 1612–1619
    1Ogasawara Nobuyuki (小笠原信之)1612–1614Saemon-no-suke (左衛門佐)Lower 5th (従五位下)20,000 kokutransfer from Honjo Domain
    2Ogasawara Masanobu (小笠原政信)1614–1619Saemon-no-suke (左衛門佐)Lower 5th (従五位下)20,000 kokutransfer to Sekiyado Domain
    Okudaira clan (fudai) 1619–1622
    1Okudaira Tadamasa] (奥平忠昌)1619–1622Mimasaka-no-kami (美作守)Lower 4th (従四位下)110,000 kokutransfer to Utsunomiya Domain
    Nagai clan (fudai) 1622–1633
    1Nagai Naokatsu (永井直勝)1622–1625Ukon-no-daifu (右近大夫)Lower 5th (従五位下)72,000 kokutransfer from Kasama Domain
    2Nagai Naomasa (永井尚政)1626–1633Shinano-no-kami (信濃守)Lower 5th (従五位下)72,000 kokutransfer to Yodo Domain
    Doi clan (fudai) 1633–1681
    1Doi Toshikatsu (土井利勝)1633–1644Ooi-no-kami (大炊頭); Jijū (侍従)Lower 4th (従四位下)160,000 kokufrom Sakura Domain
    2Doi Toshitaka (土井利隆)1644–1658Tōtōmi-no-kami (遠江守)Lower 5th (従五位下)160,000→130,000 koku
    3Doi Toshishige (土井利重)1658–1673Ooi-no-kami (大炊頭)Lower 5th (従五位下)130,000→100,000 koku
    4Doi Toshihisa (土井利久)1673–1675-none--none-100,000→70,000 koku
    5Doi Toshimasu (土井利益)1675–1681Suwo-no-kami (周防守)Lower 5th (従五位下)70,000 kokutransfer to Shima Domain
    Hotta clan (fudai) 1681–1685
    1Hotta Masatoshi (堀田正俊)1681–1684Chikuzen-no-kami (筑前守), Jijū (侍従)Lower 4th (従四位下)130,000 kokutransfer from Annaka Domain
    2Hotta Masanaka (堀田正仲)1684–1685Shimosa-no-kami (下総守)Lower 4th (従四位下)130,000 kokutransfer to Yamagata Domain
    Matsudaira (Fujii) clan (fudai) 1685–1693
    1Matsudaira Nobuyuki (松平信之)1685–686Hyuga-no-kami (日向守)Lower 5th (従五位下)90,000 kokufrom Koriyama Domain
    2Matsudaira Tadayuki (松平忠之)1686–1693Hyuga-no-kami (日向守)Lower 5th (従五位下)90,000 kokudispossessed
    Matsudaira (Nagasawa-Ōkōchi) clan (fudai) 1694–1712
    1Matsudaira Nobuteru (松平信輝)1694–1709Izu-no-kami (伊豆守)Lower 5th (従五位下)70,000 kokufrom Shima-Toba Domain
    2Matsudaira Nobutoki (松平信祝)1709–1712Izu-no-kami (伊豆守)Lower 5th (従五位下)70,000 kokuto Yoshida Domain
    Honda clan (fudai) 1712–1759
    1Honda Tadanaga (本多忠良)1712–1751Nakatsukasa-daiyu (中務大輔), Jijū (侍従)Lower 4th (従四位下)50,000 kokufrom Kariya Domain
    2Honda Tadahisa (本多忠敞)1751–1759Nakatsukasa-daiyu (中務大輔)Lower 5th (従五位下)50,000 kokutransfer to Hamada Domain
    Matsudaira (Matsui) clan (fudai) 1759–1762
    1Matsudaira Mitsuyuki (松平康福)1759–1762Suo-no-kami (周防守), Jijū (侍従)Lower 4th (従四位下)50,000 kokutransfer to Okazaki Domain
    Doi clan (fudai) 1762–1871
    1Doi Toshisato (土井利里)1762–1777Ooi-no-kami (大炊頭); Jijū (侍従)Lower 4th (従四位下)70,000 koku
    2Doi Toshichika (土井利見)1777–1777Mimasaka-no-kami (美濃守)Lower 5th (従五位下)70,000 koku
    3Doi Toshiatsu (土井利厚)1777–1822Ooi-no-kami (大炊頭); Jiju (侍従)Lower 4th (従四位下)70,000→80,000 koku
    4Doi Toshitsura (土井利位)1822–1848Ooi-no-kami (大炊頭); Jiju (侍従)Lower 4th (従四位下)80,000 koku
    5Doi Toshinari (土井利亨)1848–1848Ooi-no-kami (大炊頭)Lower 5th (従五位下)80,000 koku
    6Doi Toshinori (土井利則)1848–1867Ooi-no-kami (大炊頭)Lower 5th (従五位下)80,000 koku
    7Doi Toshitomo (土井利与)1867–1871Ooi-no-kami (大炊頭)Lower 5th (従五位下)80,000 koku

    See also
    • List of Han

    References
    • The content of this article was largely derived from that of the corresponding article on Japanese Wikipedia.
    • Papinot, E (1910). Historical and Geographic Dictionary of Japan. Tuttle (reprint) 1972.

    Notes
    1. "Koga Castle" at JapaneseCastleExplorer.com; retrieved 2016-12-2.
    2. Mass, Jeffrey P. and William B. Hauser. (1987). The Bakufu in Japanese History, p. 150.
    3. Elison, George and Bardwell L. Smith (1987). Warlords, Artists, & Commoners: Japan in the Sixteenth Century, p. 18.
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