Although the Kajiwara clan had been vassals of the Kawachi-Genji (the Minamoto clan) as well as other clans such as the Oba clan, after the death of MINAMOTO no Yoshitomo in the Heiji War, they followed the Taira clan.
梶原氏は大庭氏らとともに河内源氏の家人であったが、平治の乱で源義朝が敗死した後は平家に従っていた。