 The setting for Marie's lais is the Celtic world, embracing England, Wales, Ireland, Brittany and Normandy.Only five manuscripts containing some or all of Marie’s lais exist now, and the only one to include the general prologue and all twelve lais is British Library MS Harley 978.That may be contrasted with the 25 manuscripts with Marie's "Fables" and perhaps reflects their relative popularity in the late Middle Ages.