Yoshitada YAMANOBE, the fourth son of Yoshiaki, was finally promoted to Karo (chief retainer) of Mito Province, and his descendents served as vassals and played an important role in the domain duties ('Hyogo YAMANOBE,' the captious kunigaro [the chief retainer in charge of the fief in the absence of the lord] of Mito Province, who was played by Ryutaro OTOMO, Hideo TAKAMATSU, or Tetsuro TANBA, in the TV historical play 'Mitokomon' (Panasonic drama theater) modeled after Yoshikata YAMANOBE, a son of Yoshitada).
義光の4男山野辺義忠は最終的には水戸藩の家老に抜擢され、子孫は代々世臣として藩政に重きをなした（テレビ時代劇「水戸黄門(パナソニックドラマシアター)」において大友柳太朗・高松英郎・丹波哲郎らが演じた、水戸藩の口うるさい国家老「山野辺兵庫」は、義忠の子の山野辺義堅をモデルにしている）。