Sadayori became the kanryodai (delegated lord) of the Ashikaga shogun family, was based at Kannonji Castle, and built power across Omi in order to foster the full blossoming of the Rokkaku clan.
定頼は足利将軍家の管領代となり、観音寺城を本拠として近江一帯に一大勢力を築き上げ、六角氏の最盛期を創出した。