Tristan und Isolde (Tristan and Iseult) remains one of the most popular romances ever written. Although the tale was believed to have originated in Germany, bards in France and Britain composed their own versions of the story, a tale of adultery, betrayal, mistaken identity, and thwarted love. In The Tristan Legend, Sigmund Eisner offers a study of the sources of the Tristan romance, tracing th…