King Arthur: man or myth?

We all know about King Arthur and his Knights of the Round Table from stories that have been popular since the Middle Ages. Is there any truth to them?

The Holy Grail, Camelot, Guinevere and Lancelot are familiar, but does anything underlie the stories? Are they, as many historians suppose, simple fictions that may contain elements taken from earlier myth and folklore, or is there a real history behind them? You will find out some unexpected facts from this talk.