FUJIWARA no Kunihira, the eldest son and a child of concubine did not succeed Hidehira as the head of the family, but FUJIWARA no Yasuhira, the second son and a child of Seishitsu (legal wife) did.
家督は側室腹の長男・藤原国衡ではなく、正室腹の次男・藤原泰衡が継いだ。