Book excerpt: Folklore and Literature shows how modern folklore supplements an understanding of the early oral tradition and enhances the knowledge of the early literature. Besides documenting how writers incorporated folklore into their works, this book allows us to understand crucial passages whose learned authors took for granted a familiarity with the oral tradition, thus enabling us to restore those passages to their intended meaning. Studying the vicissitudes of oral transmission in great detail, this is the first book exclusively dedicated to the relationship between folklore and literature in a Luso-Brazilian context, taking into account the pan-Hispanic and other traditions as well. Some of the folkloric passages included are: Puputiriru; Celestina; El idolatra de Maria; Remando Vao Remadores; Barca Bela; Flerida; and Don Duarodos.