| In addition, giving clan names and hereditary titles to princes by demoting them from the nobility to subject came to be executed quite often; examples include TAIRA no Ason from Emperor Kammu and MINAMOTO no Ason from Emperor Seiwa. |
また、桓武天皇より平朝臣、清和天皇などから源朝臣の氏姓（ウヂ・カバネ）が生まれたように、諸皇子に氏姓をあたえる臣籍降下が盛んに行われるようになった。 |