In 1712, he was adopted by Tadatura and was first introduced by Ienobu TOKUGAWA; he referred to himself as Iki no kami (Governor of Iki Province) after he was appointed as Jugoinoge.
正徳2年に忠位の養子となり徳川家宣に初めて披露され、従五位下に任官し壱岐守を名乗る。