The identities of writers from ancient times such as Aesop and Homer are suspicious, but they are placed outside the discussion as to whether their works are gisho or forged writings.
もっとも、文学の場合、大きく時代を遡れば、アイソポス（イソップ）やホメロスなど著者の同一性自体が揺らいでいても偽書・贋作論議の埒外に置かれているケースもある。