徳川家茂
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.