At first, members of Seiwa-Genji, such as MINAMOTO no Yorimitsu and MINAMOTO no Yorinobu were appointed to shoshii, allowing Seiwa-Genji to be recognized as the head of the samurai families.
当初、源頼光や源頼信をはじめとして清和源氏が相次いで正四位に任じられ、清和源氏が武家の棟梁として認識されていた。