Some families which were derived from the Imperial family flourished as Toryo (leader) of samurai (warriors) in the provinces, and famous examples are Kanmu-Heishi (TAIRA clan) and Seiwa-Genji (Minamoto clan).
皇別氏族の中には地方で武士の棟梁として活躍するものもおり、桓武平氏と清和源氏はその代表例である。