Furthermore, the Yasuda clan was part of the Echigo branch of the Mori household, from which Takahiro's adoptive father Hiroharu hailed and was adopted by Sukehiro KITAJO; accordingly, Hiroharu concurrently held the roles of heads of the Kitajo and Yasuda clans.
なお、越後の毛利一族には安田氏がおり、高広の父（養父）の広春はもともとは安田氏の出身で、北条輔広の養子となり、北条氏と安田氏の当主を兼任していた。