The Lady of the Lake (French: Dame du Lac, Demoiselle du Lac, Welsh: Arglwyddes y Llyn, Cornish: Arloedhes an Lynn, Breton: Itron al Lenn, Italian: Dama del Lago) is a name or a title used by several either fairy or fairy-like but human enchantresses in the Matter of Britain, the body of medieval literature and mythology associated with the legend of King Arthur. They play important roles in many stories, including providing Arthur with the sword Excalibur, eliminating Merlin, raising Lancelot ...