Komoro Domain

Komoro Domain (小諸藩, Komoro han^?) was a feudal domain under the Tokugawa shogunate of Edo period Japan. It is located in Shinano Province, Honshū. The domain was centered at Komoro Castle, located in what is now part of the city of Komoro in Nagano Prefecture.

The area which later became Komoro Domain was repeated contested between the Uesugi clan, the Takeda clan and the Late Hōjō clan during the Sengoku period, changing hands repeatedly. After Toyotomi Hideyoshi annihilated the Hōjō clan in the Siege of Odawara in 1590, he awarded Komoro as a 50,000 koku holding to Sengoku Hidehisa. The marked the start of Komoro Domain. He was confirmed in his status by Tokugawa Ieyasu after the Battle of Sekigahara, and his son, Sengoku Tadamasa was transferred to Ueda Domain in 1622.

Komoro was part of the holdings of Kofu Domain from 1622-1624, but was revived as an independent domain for Matsudaira Norinaga from 1624-1647. On his death without an heir, the domain was placed under Matsumoto Domain for a year, until the transfer of Aoyama Munetoshi, who was raised from hatamoto status. He subsequently served as Osaka jōdai from 1662, and Komoro was given to Sakai Tadayoshi, formerly of Isesaki Domain. Sakai was demoted to Tanaka Domain in Suruga Province in 1679. The next ruler of Komoro was Nishio Tadanari, formerly of Tanaka Domain. He made great efforts to undue the damage caused by the misgovernment of Sakai Tadayoshi, but was transferred to Yokosuka Domain in 1682. Komoro was then given to a junior branch of the Matsudaira clan from 1679 to 1702.

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