This is unknown it's currently a huge dibate. He's a legend, a myth, but some people believe that he was real, and would return some day for that matter.
No one is entirely sure if King Arthur really existed. There is potentially some element of truth in the story, but over the years it's been 'padded out' with adventures and things to make it a more...
There is some controversy as to whether there was ever a real King Arthur at all. Some have found reason to believe that castle/fortress remains found in the area near Salisbury suggest a one-time...