At the time of the Heiji Disturbance in 1159, participation in the war was in line with Minamoto clan leader MINAMOTO no Yoshitomo (nephew and eldest son of MINAMOTO no Tameyoshi).
1159年の平治の乱のおり、源氏の棟梁・源義朝（甥で源為義の嫡男）に従って参戦。