The Chichibu clan lost its power in the Musashi Hei Ikki no Ran (Musashi Hei Riot Rebellion (武蔵平一揆の乱)), and the Uesugi clan of Kanto Kanrei (a position to support the chief of Kamakura-fu) took over Musashi Province.
秩父氏は武蔵平一揆の乱で力を失い、武蔵国の実権は関東管領上杉氏が握った。