徳川家治
was the 6th "daimyō" of Yunagaya Domain. He was the sixth son of Tokugawa Munenao of Kii Domain and his wife was the daughter of Hijikata Katsumasa, "daimyō" of Komono Domain. He became "daimyō" in 1761 after his adopted father was received in formal audience by Shōgun Tokugawa Ieharu and unexpectedly went into retirement immediately thereafter. He had four sons and one daughter. He died in 1778 at the age of 33, and his grave is at the Naitō Cemetery at Kōmyō-ji in Kamakura.