One of the most influential storytellers in Western literature, French poet Chr tien de Troyes helped to shape the ever-fascinating legend of King Arthur and the Round Table. Of Chr tien's five surviving romantic Arthurian poems, the last and longest is Perceval, an unfinished work that introduces the story of the Grail--a legend quickly adopted by other medieval writers and taken up by a continuing succession of authors. In Chr tien's romance,...