In 1160, while Shigemori was promoted to the court rank of Jushiinojo (Junior Fourth Rank, Upper Grade) and appointed to the post of Kura no kami (Chief of Kuraryo, Bureau of Palace Storehouses), the official rank of Yorimori remained the same.
永暦元年（1160年）に重盛が従四位上・内蔵頭となったのに対して、頼盛の官位はそのまま据え置かれた。