The YANAGISAWA clan had a close relationship with the Koke Takeda clan, the main stream of the Takeda clan; Nobuyasu TAKEDA, the second son of Yasunobu, became the head of Koke Takeda clan, and the bloodline continues today.
武田氏宗家の高家武田氏とは密接な関係にあり、保申の次男、武田信保が高家武田氏の当主を継ぎ、血筋が絶えることなく現在に至っている。