When Goshirakawa opened his Office of Retired Government (In no Cho) in August, 1158, he appointed Nobuyori the Commander of his Imperial Stables, in charge of all Goshirakawa's own horses.
保元3年（1158年）8月に後白河院庁が開設されると、信頼は院の軍馬を管理する厩別当に就任する。