His grandfather Takasuke YANADA was the key figure in pro-Hojo group in the family, who worked hard to welcome a daughter of Ujitsuna HOJO, Hoshunin (disambiguation) as Haruuji's second lawful wife.
祖父・簗田高助は家中の親北条派の中心として、晴氏の後添えの正室に北条氏綱の娘・芳春院(曖昧さ回避)を迎え入れるように尽力した実力者であった。