In 1118, when Shoshi became the Chugu (Empress) to Emperor Toba, he was appointed Chugu Gon no suke (Provisional Assistant Master of the Consort's Household), and when Shoshi was awarded with an ingo (a title of respect given to close female relatives of the Emperor or a woman of comparable standing), Taikeimonin, Saneyoshi was appointed Taikeimonin no betto (Secretary of the office of Taikeimonin).
元永元年（1118年）璋子が鳥羽天皇の中宮になると中宮権亮、天治元年（1124年）璋子が院号宣下を受けると待賢門院別当になる。