Additionally, Katsumoto, who originally had no heir, adopted Toyohisa YAMANA, who was the son of Sozen, but he disinherited Toyohisa and compelled him to enter the Buddhist priesthood after the birth of his own son Masamoto HOSOKAWA in 1466, clearly indicating their diminished relationship.
また、はじめ継嗣がいなかった勝元は、宗全の子・山名豊久を養子にしていたが、文正元年（1466年）に実子細川政元の誕生後、豊久を廃嫡して仏門に入れるなど、関係の悪化は明白となった。