After saving MINAMOTO no Yoritomo at the Battle of Ishibashiyama, he was given important positions, such as Samurai-dokoro shoshi (Deputy Chief of the Board of vassals) and Umaya-no-betto (chief of Umaya-no-tsukasa, ministry of the stables).
石橋山の戦いで源頼朝を救ったことから重用され侍所所司、厩別当となる。