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Tsuyama Domain (津山藩, Tsuyama han) was a Japanese domain of the Edo period. It was associated with Mimasaka Province in modern-day Okayama Prefecture.
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In the han system, Tsuyama was a political and economic abstraction based on periodic cadastral surveys and projected agricultural yields. In other words, the domain was defined in terms of kokudaka, not land area. This was different from the feudalism of the West.
History
In 1600, the territory that became the Tsuyama domain formed part of the territory ruled from Okayama by Kobayakawa Hideaki. However, as Hideaki died heirless in 1602, the domain was confiscated by the shogunate.
In 1603, Mori Tadamasa, the younger brother of Oda Nobunaga's page Mori Ranmaru, was transferred to Tsuyama from the Kawanakajima Domain, and given landholdings worth 186,500 koku. Up to this point, the domain was called Tsuruyama; it was with Tadamasa's entry that it became known as Tsuyama. Tadamasa was responsible for the construction of the castle town and the development of the domain's politics. In 1697, the Mori clan was transferred out of Tsuyama, and the following year, Matsudaira Nobutomi, a great-grandson of Yūki Hideyasu, was granted Tsuyama as his domain. The Matsudaira clan remained in Tsuyama until 1871.
One of the Tsuyama domain's last daimyo, Matsudaira Naritami, achieved national prominence, as he was a son of Tokugawa Ienari, and was very active in the affairs of the Tokugawa family after 1868. Naritami was also known as Matsudaira Kakudō.
In 1871, the Tsuyama domain became Tsuyama Prefecture, before becoming Hōjō Prefecture and then Okayama Prefecture; the territory remains in Okayama Prefecture to the present day.
List of daimyo
The hereditary daimyo were head of the clan and head of the domain.