Some people say that Shigeyuki ISSHIKI, who was a guest freeloader of Michikiyo ISHIKAWA in Niihama City, Iyo Province, was the third son of Yoshisada who survived the attack by the Hosokawa clan.
伊予国新居浜市で石川通清の食客となった一色重之は、細川氏の攻撃から落ち延びた義定の三男という伝承がある。