was a feudal domain under the Tokugawa shogunate of Edo period Japan, in

Musashi Province was a province of Japan, which today comprises Tokyo Metropolis, most of Saitama Prefecture and part of Kanagawa Prefecture. It was sometimes called . The province encompassed Kawasaki and Yokohama. Musashi bordered on Kai, Kōzuke, Sagami, S ...

(modern-day

Saitama Prefecture is a landlocked prefecture of Japan located in the Kantō region of Honshu. Saitama Prefecture has a population of 7,338,536 (1 January 2020) and has a geographic area of 3,797 km2 (1,466 sq mi). Saitama Prefecture borders Tochigi Prefecture ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. It was centered on

Iwatsuki Castle is a Japanese castle located in Iwatsuki-ku, Saitama, in Saitama Prefecture, Japan. At the end of the Edo period, Tateyama Castle was home to the Ōoka clan, ''daimyō'' of Iwatsuki Domain, however the castle dates from the Muromachi period and w ...

in what is now part of Iwatsuki-ku, Saitama.

History

Iwatsuki was an important strongpoint of the Odawara Hojo clan. However, following the destruction of that clan at the Battle of Odawara of 1590, the territory came under the control of Tokugawa Ieyasu, who assigned a 20,000 ''

koku The is a Chinese-based Japanese unit of volume. 1 koku is equivalent to 10 or approximately , or about . It converts, in turn, to 100 shō and 1000 gō. One ''gō'' is the volume of the "rice cup", the plastic measuring cup that is supplied ...

'' domain to one of his most trusted retainers, Kōriki Kiyonaga. Following the Siege of Osaka, his grandson Kōriki Tadafusa was awarded with a promotion to the 35,000 koku Hamamatsu Domain in 1619. The following year, in 1620, the '' rōjū'' Aoyama Tadatoshi was awarded Iwatsuki with holdings of 55,000 koku. He subsequently fell from favor and was demoted to the 20,000 ''koku''

Ōtaki Domain was a feudal domain under the Tokugawa shogunate of the Edo period, located in Kazusa Province (modern-day Chiba Prefecture), Japan. It was centered on Ōtaki Castle in what is now the town of Ōtaki, Chiba. History The original Ōtaki Castle w ...

in 1623. Abe Masatsugu was transferred to Iwatsuki in 1638 from Odawara Domain. The Abe clan ruled Iwatsuki over the next five generations until 1681, gradually increasing their holdings to 95,000 ''koku''. After their transfer to Miyazu Domain, they were replaced by Itakura Shigetane (1681-1682), Toda Tadamasa (1682-1686), Matsudaira Tadachika (1696-1697) Ogasawara Nagashige (1697-1710) and his son Ogasawara Nagahiro (1710-1711). The Nagai clan was then awarded Iwatsuki, beginning with Nagai Naohiro in 1711 and lasting for three generations until the clan was transferred to Kanō Domain in 1756. Ōoka Tadamitsu (1709–1760), a distant relative of

Ōoka Tadasuke was a Japanese samurai in the service of the Tokugawa shogunate. During the reign of Tokugawa Yoshimune, as a magistrate (''machi-bugyō'') of Edo, his roles included chief of police, judge and jury, and Yamada Magistrate ( Yamada bugyō) prio ...

who had started as a 300 ''koku'' '' hatamoto'', rose rapidly through the ranks and was eventually awarded Iwatsuki and 20,000 ''koku'' in 1756. His descendants remained at Iwatsuki until the Meiji Restoration. The final daimyō of Iwatsuki, Ōoka Tadatsura (1847–1920) sided with the pro-imperial forces in the

Boshin War The , sometimes known as the Japanese Revolution or Japanese Civil War, was a civil war in Japan fought from 1868 to 1869 between forces of the ruling Tokugawa shogunate and a clique seeking to seize political power in the name of the Imperi ...

and made a viscount (''shishaku'') in the '' kazoku'' peerage system in the Meiji period. The domain had a population of 38,404 people in 6,962 households per a census in 1870.

Holdings at the end of the Edo period

As with most domains in the han system, Iwatsuki Domain consisted of several discontinuous territories calculated to provide the assigned ''

kokudaka refers to a system for determining land value for taxation purposes under the Tokugawa shogunate of Edo-period Japan, and expressing this value in terms of ''koku'' of rice. Nussbaum, Louis-Frédéric. (2005)"Koku"in ''Japan Encyclopedia'', p. 54 ...

'', based on periodic cadastral surveys and projected agricultural yields.Elison, George and Bardwell L. Smith (1987)
''Warlords, Artists, & Commoners: Japan in the Sixteenth Century,'' p. 18
*

**1 village in Adachi District **2 villages in Katsushika District **3 villages in Tama District **56 villages in Saitama District **1 village in Hiki District **7 villages in Koma District **1 village in Hara District * Awa Province **9 villages in Nagasa District **1 village in Asai District * Kazusa Province **8 villages in Ichihara District **1 village in Mōta District **69 villages in Isumi District **1 village in Nagara District **4 villages in Yamabe District * Shimōsa Province **4 villages in Katsushika District * Yamashiro Province **1 village in Sōraku District * Hitachi Province **1 village in Niihari District * Kōzuke Province **5 villages in Seta District **2 villages in Nawa District

List of daimyō

References

External links

Iwatsuki on "Edo 300 HTML"

Notes

{{Authority control Domains of Japan 1871 disestablishments in Japan States and territories disestablished in 1871 Musashi Province History of Saitama Prefecture Abe clan Fujii-Matsudaira clan Itakura clan Ogasawara clan