At the late period of the government by a Cloistered Emperor Toba, Emperor Goshirakawa and the Retired Emperor Sutoku conflicted with each other; when the Cloistered Emperor Toba was in a grave condition, one of the samurai he gave to Bifukumon-in to rely upon was Yorimasa.
鳥羽院政末期、後白河天皇と崇徳上皇が対立、鳥羽法皇が重篤に陥った際、美福門院へ頼りにすべき武士として名を挙げた一人に頼政の名がある。