Tokugawa Iemochi
He retired from public life in 1866 on the death of "Shōgun" Tokugawa Iemochi, and was succeeded at Yamagata by his son Mizuno Tadahiro. Mizuno Tadakiyo was married to a daughter of Inoue Masahari, a fellow "Rōjū" and "daimyō" of Tanagura Domain.