At the beginning of the Kamakura period, the retainers were forbidden by the First Seii Taishogun MINAMOTO no Yoritomo from assuming a name made up with 'honsei' (real family name) followed by 'imina' (real given name): e.g. TAIRA no Kagetoki.
鎌倉幕府草創の時に、初代征夷大将軍源頼朝が御家人に対して、例えば梶原景時（たいら・の・かげとき）といった「本姓」＋「諱」の名乗りを禁じた。