Yoshinari, who had been the authorized heir of the Hatakeyama family in or around 1455, was expelled by Yoshimasa as a result of a plot by Katsumoto, and his cousin Masanaga replaced Yoshinari as the authorized heir of the family.
1455年（康正元年）のころ畠山家総領であった義就は、勝元の策謀によって義政から追放され、従兄弟である政長が替わって畠山家総領を継承した。