Sōma clan
was the 3rd "daimyō" of Sōma-Nakamura Domain and the19th hereditary chieftain of the Sōma clan. He was the younger son of Tsuchiya Toshinao of Kururi Domain and was adopted into the domain through the intervention of the rōjū Matsudaira Nobutsuna when Yoshitane died without heir. His courtesy title was "Nagato-no-kami". In 1656 he conducted a comprehensive re-survey of the domain, accompanied by land reform and tax reduction and in 1668 undertook large scale development of new rice lands. He is regarded as one of the most able of the Sōma rulers and had good relations with officials in the shogunate administration. He died of illness at Nakamura Castle in 1673.