sentences:  He was a key supporter of the "Kōbu gattai" policy of supporting the Shogunate through marriage ties to the Imperial family, and one of the prime signatories to treaties ending Japan’s national isolation policy.During the Boshin War, the domain officially remained a supporter of the shogunate, and contributed many samurai to the "Shōgitai;" however, many of its younger retainers supported the "Sonnō jōi" movement and defected to the Satchō Alliance.After the Battle of Ueno, the final "daimyō" of Sekiyado, Kuze Hironari, submitted to the new Meiji government.