Kageyuki TOYAMA's wife was a daughter of Takasada MIYAKE, the lord of the Hirose-jo Castle in Mikawa Province, and it supports the theory that he succeeded as the head of the Miyake clan, which Kageharu TOYAMA's mother came from.
また遠山景行の妻が三河国広瀬城主三宅高貞の娘であるため、遠山景玄の母に相当する三宅氏の跡を継いだという補説もある。