In Zen Kunen no Eki (Earlier Nine Years' War), his father Tsunekiyo turned against MINAMOTO no Yoriyoshi and supported the Abe clan (in Mutsu Province), who lost in the Battle of Kuriyagawa and he also died with them.
父・経清は前九年の役で源頼義に反旗を翻し安倍氏(奥州)に味方したが厨川の戦いで敗れた安倍氏と最後をともにした。