After the death of Myochin in 1480, Toshikuni SAITO (Myojun) and Toshifuji SAITO fought against each other (Bunmei Mino War), then, Myojun and Toshimitsu ISHIMARU, who was Shugodai and a main retainer of the Saito clan), had a fight against each other (the Battle of Funada).
文明(日本)12年（1480年）に妙椿が死去すると、斎藤利国（妙純）と斎藤利藤が争い（文明美濃の乱）、その後は妙純と守護代の家宰石丸利光が戦った（船田合戦）。