During the subsequent Hogen Disturbance, Yorimori joined the disturbance on the side of Emperor Goshirakawa as he was serving Tadamichi and was appointed as the guard for the emperor with hundreds of roto (retainer) ("Heihanki" (diary of TAIRA no Nobunori), Article of August 5, 1156).
その後の保元の乱では、頼盛は忠通に近侍していた事から後白河天皇方として参陣し、数百の郎党を率いて天皇の警護の任に就くなどした（『兵範記』保元元年（1156年）7月11日条）。