Le Morte d'Arthur is a 15th-century Middle English prose compilation and reworking by Sir Thomas Malory of tales about the legendary King Arthur, Guinevere, Lancelot, Merlin and the Knights of the Round Table, along with their respective folklore, including the quest for the Holy Grail and the legend of Tristan and Iseult. In order to tell a "complete" story of Arthur from his conception to his death, Malory put together, rearranged, interpreted and modified material from various French and English sources. Today, this is one of the best-known works of Arthurian literature.