Tsuyama Domain

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.

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.

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.

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