In 1467 the Onin War erupted in connection with the problems concerning the succession to the headship of the Ashikaga Shogun family as well as the succession to the headships of the Hatakeyama and Shiba families.
応仁元年（1467年）、足利将軍家の家督相続問題と畠山氏・斯波氏の家督相続問題などが関係して応仁の乱が発生する。