When were the knights of the round table first created?

Answer 1

The legend of King Arthur was written five centuries after his time. The idea that King Arthur was a real King was promoted by the writing of Geoffrey of Monmouth. He identified King Arthur as a high king from England's past. In his book "The History of the Kings of Britain" details of the life of King Arthur are posited. He describes in detail Arthur's birth, childhood and ascension to the throne. In written word he moves through Arthur's military life, relationships with other rulers and death. He documents King Arthur's existence from late fifth century to 542 when he was killed in battle. That would mean that the knights of the round table would likely have been created between 500-530. Geoffrey's facts allegedly came from an ancient book, never named, never seen by anyone but him. Was King Arthur factual or fantasy. It's likely he was a combination of both.