Want this question answered?
He had a child by his half sister
In some legends yes, but in some no. In some he is the child of Morgan le Fay (Morgan the Fairy) half sister of King Arthur.
Merlin was King Arthur's tutor when he was a child.
Morgan (or Morgana) la Fey was King Arthur's half sister.
tati girl
If you are asking about King Arthur and his Knights of the Round Table; then his sister's name is Morgana or Morgan La Fey (Morgana the Fairy)
morgan la fey
morgan la fey
Morganna Le Faye, who may have been Arthur's sister or half-sister.
in the tv series Merlin yes he does
Actually, in most stories, King Arthur has a baby with his other half sister Morgause. The only exception I know to this, is in The Mists of Avalon. In any case, Arthur didn't like the fact that he had his sister's child. It is, after all, tabooed. He shrank from what he had done, and because of it, didn't like his son, Modred. This was part of what initially caused the battle between them in the legend.
They say that once, King Arthur was given a cape by his own sister. He suspected trickery and evil so he told his messenger to put it on first. His sister had magically poisoned the cape. King Arthur and his wife swore revenge and JUSTICE on her even if it would be the last thing they did.