In 1219, Tsunehide encountered the scene of MINAMOTO no Sanetomo being assassinated when he accompanied Sanetomo visiting Tsuruoka Hachiman-gu Shrine to make an address of gratitude to god for the bestowment of udaijin (minister of the right).
承久元年（1219年）には源実朝右大臣就任の鶴岡八幡宮拝賀に供奉し、実朝暗殺事件に遭遇した。