Tristan und Isolde (Tristan and Iseult) remains one of the most popular medieval romances ever written. The tales originated in Germany, but bards in France and Britain composed their own versions of the story, a tale of adultery, betrayal, mistaken identity, and thwarted love. Eisner's The Tristan Legend offers a study of the sources of the Tristan romance, tracing them through the various versions of the legend.