By Dr Oliver Tearle (Loughborough University)
Probably the most famous legend to feature a love potion, the story of Tristan and Isolde (or Iseult, as her name is rendered in some versions of the myth) is one of the most celebrated Celtic legends along with the stories of King Arthur. Indeed, Tristan and Isolde are sometimes associated with the Arthurian legend, with both myths having their roots in medieval Britain and/or Ireland.