The Gwerz Santes Enori is a Breton gwerz, a type of folk song that combines literary with musical characteristics. The song, which is preserved in many versions and fragments, tells a story that resembles a saint's life, a 14th-century version of the hagiography of the Breton saint Budoc. Its general theme has been called that of "the girl with a golden breast", as told in stories throughout the Celtic world and surviving in oral form into the 20th century.