I think I am one of the only people in the world that doesn't like the King Arthur stories, or at least, three of the main characters (the king, the girl, and the best friend - good ol' lance).
Well, I love the tales, even though some of the characters acted in ways that were less than noble.
I saw Camelot on Broadway in 1962..Awesome!!
The correct and true story is that in the pre-pre-past the real “Arthur” was given the knowledge, the ART, of metallurgy in one of those (everybody knows that a woman in water is really just a metaphor for aliens in space) vision things (see Ezekiel) and learned how to produce metals from ore. Draw the sword from the stone.
All that other is just theater.
The theater part started when the Picts came up with the idea of the Pict-o-gram and it just morphed from there and it is just our lot now to be stuck with James Cameron...