The Gikeiki (義経記), "The Chronicle of Yoshitsune", is a Japanese gunki monogatari ("war-tale") that focuses on the legends of Minamoto no Yoshitsune and his followers. Thought to have been written during the Nanboku-chō period, it has provided inspiration to numerous Noh, kabuki and bunraku plays. Much of the image that people today have of Yoshitsune and those associated with him (Saitō no Musashibō Benkei and Shizuka Gozen, for example) is considered to have been influenced by the Gikeiki. Source: Wikipedia (en)