Iino Domain

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Site of Iino jin’ya in Futtsu, Chiba

Iino Domain (飯野藩 Iino-han?) was a Japanese domain of the Edo period, located in Kazusa Province (modern-day Chiba Prefecture), Japan.

In the han system, Iino was a political and economic abstraction based on periodic cadastral surveys and projected agricultural yields.[1] In other words, the domain was defined in terms of kokudaka, not land area.[2] This was different from the feudalism of the West.


The domain was centered on Iino Jin’ya, a fortified residence in what is now the town of Futtsu, Chiba. It was ruled for the entirety of its history by a branch of the Hoshina clan (later Matsudaira clan) of Aizu.

Iino Domain was created when a 7000 koku hatamoto, Hoshina Masasada was granted an additional 10,000 koku of territory in Settsu Province after his appointment as Justicar of Osaka in 1648. On his death, 2000 koku was given to his younger son, Hoshina Masafusa, reducing the domain to 15,000 koku. However, the domain expanded again to 20,000 koku under the tenure of Hoshina Masakage. The 10th (and final) daimyō of Iino Domain, Hoshina Masaari, served as wakadoshiyori, and played an important role as a commander in the Second Chōshū expedition. However, during the Boshin War, he switched sides to the Satchō Alliance and was later appointed to judge the guilt of those who had opposed the Meiji Restoration, including many of his relatives from the Hoshina clan of Aizu. Iino Domain became Iino Prefecture on the abolition of the han system in August 1871, and subsequently part of Kisarazu Prefecture, followed by Chiba Prefecture.

List of daimyō[edit]

# Name Tenure Courtesy title Court Rank revenues
1 Hoshina Masasada (保科正貞?) 1648-1661 Danjō no chū Lower 5th (従五位下) 17,000->15,000 koku
2 Hoshina Masakage (保科正景?) 1661-1686 Danjō no chū Lower 5th (従五位下) 15,000->20,000 koku
3 Hoshina Masakata (保科正賢?) 1686-1714 Hyōbu-sho Lower 5th (従五位下) 20,000 koku
4 Hoshina Masataka (保科正殷?) 1715-1718 -none- -none- 20,000 koku
5 Hoshina Masahisa (保科正寿?) 1718-1739 Danjō no chū Lower 5th (従五位下) 20,000 koku
6 Hoshina Masatomi (保科正富?) 1739-1770 Echizen-no-kami Lower 5th (従五位下) 20,000 koku
7 Hoshina Masanori (保科正率?) 1770-1802 Danjō no chū Lower 5th (従五位下) 20,000 koku
8 Hoshina Masayoshi (保科正徳?) 1802-1817 Shimosa-no-kami Lower 5th (従五位下) 20,000 koku
9 Hoshina Masamoto (保科正丕?) 1817-1848 Danjō no chū Lower 5th (従五位下) 20,000 koku
10 Hoshina Masaari ( 保科正益?) 1848-1871 Danjō no chū Lower 5th (従五位下) 20,000 koku


  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.

Further reading[edit]

  • Bolitho, Harold (1974). Treasures among men; the fudai daimyo in Tokugawa Japan. New Haven: Yale University Press.
  • Kodama Kōta 児玉幸多, Kitajima Masamoto 北島正元 (1966). Kantō no shohan 関東の諸藩. Tokyo: Shin Jinbutsu Ōraisha.

External links[edit]