This marital relationship provided an important contact, in the capital, with her brother, Yoritomo, who started fighting with arms and became the leader of the eastern region, and therefore, Yoshiyasu became an important function in the capital for the Kamakura government.
この縁戚関係が、挙兵し東国の主になった兄弟頼朝の重要な都との接点となり、能保は都における鎌倉政権の出先機関として重用された。