MINAMOTO no Yoritomo used to be called 'Bakufu' since he was Ukone-no-Daisho (Imperial guard chief of the Right) before becoming Seii Taishogun (literally, "great general who subdues the barbarians").
源頼朝は征夷大将軍任官前に右近衛大将だったことから「幕府」と呼ばれた。