Kaburaya was already described (Hogen Monogatari; the Tale of the Hogen War) in Kamakura period, and the name of Kaburaya was not fixed early on; its origin and when it began to be used is unknown.
鎌倉時代には既に記述が見られる（保元物語）が、初期の頃は名称も定まっておらず起源、いつ頃から使われていたのかは解っていない。