Ichinoseki Domain

Ichinoseki Domain (村松藩, Ichinoseki-han^?) was a tozama feudal domain under the Tokugawa shogunate of Edo period Japan. It is located in Mutsu Province, Honshū. The domain was centered at Ichinoseki Jin'ya, located in what is now part of the city of Ichinoseki in Iwate Prefecture. Although nominally independent, it was a branch domain of the Date clan of Sendai Domain, and its ruling daimyō, the Tamura clan, was a branch of the Date lineage.

Ichinoseki Domain was originally created in 1660 for Date Munekatsu, the 10th son of Date Masamune, although a fortification had existed at Ichinoseki since the Muromachi period. It was a subsidiary domain to Sendai Domain. However, Data Munekatsu was a central figure in the Date Sōdō, an O-Ie Sōdō over the succession to the Date clan in 1671 and was dispossessed in 1671, with his holdings reverting to Sendai Domain.

The domain was revived in 1681 for the son of Tamura Muneyoshi, who transferred his seat from another subsidiary domain of Sendai, Iwanuma Domain. Muneyoshi's grandfather was Date Tadamune, the second son of Date Masamune. The Tamura clan continued to rule until the Meiji restoration. As commemorated in the story of the Chūshingura, Asano Naganori was invited to commit seppuku while being held under house arrest at the Tamura's Edo residence over the incident at the Matsu no Ōrōka in Edo Castle where he drew his sword against Kira Yoshinaka. The 2nd daimyo, Tamura Takeaki was especially favoured by Shogun Tokugawa Tsunayoshi, and despite his tozama status. During the Bakumatsu period, an Ichinoseki doctor was influential in the establishment of a medical school in Sendai in 1822.

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