According to a commonly accepted theory of history, it is considered that Sadayori ROKKAKU, a younger brother of Ujitsuna, succeeded to the family estate, and since then the descendants of Sadayori had succeeded to the family estate of the Rokkaku clan.
歴史学の一般的な通説においては、氏綱の弟の六角定頼が家督を継承し、以降定頼の子孫が六角氏の家督を継いだと考えられている。