In "Azuma Kagami" (The Mirror of the East), there are instances in which the residence of the shogun is referred to as "bakufu" but samurai government was not called "bakufu" at the time.
『吾妻鏡』に征夷大将軍の館を「幕府」と称している例が見られるが、当時、武家政権を「幕府」と呼んでいたわけではない。