Courtesy of
http://www.arthurian-legend.com/
King Arthur and the Knights of the Round Table never existed in real life. They're purely figures of legend. There might have been someone called Arturus (or Riothamus) in Britain's distant past, but if there was, he was probably a Romano-British leader or military general campaigning against the marauding Saxon hordes in the 5th century AD. In that period of history, however, there was no such thing as knights-in-armour - horsemen didn't even use stirrups until much later, so they couldn't have worn and fought in armour. There are several theories about the location of the 'original' court of Camelot, and although research continues, these are irrelevances: King Arthur and his knights will always be figures of fantasy, and Arthurian legend should be appreciated for what it is: a large and unique body of wonderful early European literature.
Indeed Malory's Morte d'Arthur does mention Dover a number of times including in book 21 the landing of Arthur at Dover and the internment of Gawaine in the crypt of Dover Castle.
