According to one theory, Aritomi disinherited Arimasa KADENOKOJI who was his heir as he knew that Arimasa had been christened as Christian; he then adopted Aritane, who was his nephew, but later assassinated him, and personally terminated the family name.
一説によれば、在富の嫡男である勘解由小路在昌がキリスト教の洗礼を受けた事を知った在富がこれを廃嫡し、続いて甥の在種を養子とするが、後に在富自身がこれを暗殺して自ら家名を絶ったとも言われている。