King Arthur is one of the great mythic figures of English literature. Dozens of legends and romantic images have grown up around him: the knights of the Round Table, Merlin the wizard, and the Holy Grail, to name a few. Historians can't decide whether anyone like Arthur ever existed, though most now accept that the legend is very loosely based on a real historical figure; he may have been a 5th or 6th century ruler name Arturus or Riothamus.