Izumi Domain

Monument in Iwaki, Fukushima marking location of Izumi jin’ya

Izumi Domain (泉藩 Izumi-han) was a feudal domain under the Tokugawa shogunate of Edo period Japan, located in southern Mutsu Province in what is now part of modern-day Iwaki, Fukushima.


In 1622, Torii Tadamasa, daimyō of Iwakitaira Domain was transferred to Yamagata Domain, and his place was taken by Naito Masanaga. Masanaga transferred 20,000 koku of his 70,000 koku domain to his eldest son, Naitō Tadaoki who established a separate household. On Masanaga’s death in 1634, Tadaoki inherited Iwakitaira Domain and turned his 20,000 koku holding over to his brother, Naitō Masaharu, who received official confirmation as a daimyō. The marked the start of Izumi Domain. His son, Naitō Masachika ruled from 1646-1696, and also served as wakadoshiyori from 1690-1696. His son, Naitō Masamori was transferred to Annaka Domain in 1702.

Izumi Domain was then assigned to Itakura Shigeatsu, with a reduction in revenues to 15,000 koku. His son, Itakura Katsukiyo served as rōjū and traded places with Honda Tadayuki of Sagara Domain in 1746. The Honda clan continued to rule Izumi domain through the remainder of the Edo period. Tadayuki’s son, Honda Tadakazu caught the eye of rōjū Matsudaira Sadanari after successfully reforming the domain’s finances, and was promoted to wakadoshiyori and sobayonin, where he played an important role in the Kansei Reforms. As a reward for his efforts, his revenues were increased by 5000 koku. The 5th daimyo of Izumi, Honda Tadanori established the domain’s academy in an effort to modernize the domain in the Bakumatsu period. Honda Tadatoshi served as Jisha-bugyō and who led the domain in support of the Tokugawa during the Boshin War. Following the Meiji restoration, he was punished for his support of the Ōuetsu Reppan Dōmei by a reduction in income of 2000 koku, and was forced to resign in favor of his adopted son Honda Tadanobu, who served as domain governor until the abolition of the han system in 1871.

Holdings at the end of the Edo period

As with most domains in the han system, Izumi Domain consisted of several discontinuous territories calculated to provide the assigned kokudaka, based on periodic cadastral surveys and projected agricultural yields.[1][2]

List of daimyo

#Name Tenure Courtesy title Court Rank revenues
1Naitō Masaharu (内藤政晴)[3]1634–1645Hyōbu-shosuke (兵部少輔) Lower 5th (従五位下)20,000 koku
2Naitō Masachika (内藤政親)[3]1646–1696Tamba-no-kami Lower 5th (従五位下)20,000 koku
3Naitō Masamori (内藤政森)[3]1696–1702Tamba-no-kami Lower 5th (従五位下)20,000 koku
#Name Tenure Courtesy title Court Rank revenues
1Itakura Shigeatsu (板倉重同)1702–1717Iyo-no-kami Lower 5th (従五位下)15,000 koku
2Itakura Shigekiyo (板倉勝清)1717–1746Sado-no-kami; Jiju Lower 4th (従四位下)15,000 koku
#Name Tenure Courtesy title Court Rank revenues
1Honda Tadayuji (本多忠如)1746–1754Etchu-no-kami Lower 5th (従五位下)15,000 koku
2Honda Tadakazu (本多忠籌)1754–1800Danjo-daihitsu (弾正大弼) ; Jiju Lower 4th (従四位下)15,000 --> 20,000 koku
3Honda Tadashige (本多忠誠)1800–1815 Kawachi-no-kami Lower 5th (従五位下)20,000 koku
4Honda Tadatomo (本多忠知)1815–1836Kawachi-no-kami Lower 5th (従五位下)20,000 koku
5Honda Tadanori (本多忠徳)1836–1860 Etchu-no-kami Lower 5th (従五位下)20,000 --> 18,000 koku
6Honda Tadatoshi (本多忠紀)1860–1868Noto-no-kami Lower 5th (従五位下)18,000 koku
7Honda Tadanobu (本多忠伸)1868–1871Hyobu-no-suke (兵庫助) Lower 5th (従五位下)18,000 koku

See also


  1. Mass, Jeffrey P. and William B. Hauser. (1987). The Bakufu in Japanese History, p. 150.
  2. Elison, George and Bardwell L. Smith (1987). Warlords, Artists, & Commoners: Japan in the Sixteenth Century, p. 18.
  3. 1 2 3 4 5 Papinot, Jacques Edmond Joseph. (1906). Dictionnaire d’histoire et de géographie du Japon; Papinot, (2003).

External links

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