Tsuchiura Domain

Tsuchiura Domain (土浦藩, Tsuchiura-han^?) was a feudal domain under the Tokugawa shogunate of Edo period Japan, located in Hitachi Province (modern-day Ibaraki Prefecture), Japan. It was centered on Tsuchiura Castle in what is now the city of Tsuchiura, Ibaraki. It was ruled for much of its history by the Tsuchiya clan.

During the Sengoku period, the area around Tsuchiura was controlled by the Oda clan, who were later destroyed by the Yūki clan. After the Battle of Sekigahara, and the establishment of the Tokugawa shogunate, the Yūki were relocated to Fukui Domain in Echizen Province and a portion of their vacated domain was given to Matsudaira Nobukazu as a reward for his rear-guard action in the Battle of Sekigahara. His son, Matsudaira Nobuyoshi, laid out the foundations of the castle town and built a number of gates on the Mito Kaidō highway linking Edo with Mito.

However, the Matsudaira were transferred to Takasaki Domain in Kozuke Province and were replaced by Nishio Tadanaga, who received Tsuchiura as a reward of his services in the Siege of Osaka. His son, Nishio Tadateru, was transferred to Tanaka Domain in Suruga Province.

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