However, his son, FUJIWARA no Tsunemune (1119-1189), on the occasion of the Heiji War, contributed to the victory of the TAIRA no Kiyomori side by first joining the FUJIWARA no Nobuyori/MINAMOTO no Yoshitomo side at first and then changing sides.
しかし、その子藤原経宗（1119年-1189年）は平治の乱で当初藤原信頼・源義朝方に付きながら寝返って平清盛方の勝利に貢献。