La Morte Darthur

According to Wikipedia: "a compilation by Sir Thomas Malory of Romance tales about the legendary King Arthur, Guinevere, Lancelot, and the Knights of the Round Table. Malory interprets existing French and English stories about these figures and adds original material (the Gareth story). First published in 1485 by William Caxton, Le Morte d'Arthur is today perhaps the best-known work of Arthuria...