In October, 1161, when the seventh son (Norihito, later to become Emperor Takakura) was born to Goshirakawa and TAIRA no Shigeko, TAIRA no Tokitada and Norimori planned to make him Crown Prince.
応保元年（1161年）9月後白河と平滋子の間に第七皇子（憲仁、後の高倉天皇）が生まれると、平時忠・教盛が立太子を画策した。