However, in the Heiji War in 1159, he didn't offer his force to support Yoshitomo's army, and instead he captured Yoshitomo's fifth son, MINAMOTO no Mareyoshi (his mother was Yura gozen) who was hiding in Suruga Province after the War and took him to the imperial court.
しかし、平治元年（1159年）の平治の乱においては義朝には援軍を出さず、戦後駿河国に潜伏していた義朝の五男源希義（母は由良御前）を捕らえて朝廷に差し出している。