 His courtesy title was "Sakyō-no-daifu", and his Court rank was Junior Fifth Rank, Lower Grade.Kuniaki was the younger son of Tamura Muneaki and was born at the clan's "nakayashiki" in Edo.He became "daimyō" on the death of his father in 1827, and was received in formal audience by "shōgun" Tokugawa Ienari in 1828.