Four works, or collections of works, have been attributed to Marie de France. She is principally known for her authorship of "The Lais of Marie de France", a collection of twelve narrative poems, mostly of a few hundred lines each. She claims in the preambles to most of these Breton lais that she has heard the stories they contain from Breton minstrels, and it is in the opening lines of the poem "Guigemar" that she first reveals her name to be Marie.