THE STORY OF KING ARTHUR OF CAMELOT
Some time after Morgana got pregnant of Mordred (the only son of Arthur), she took the baby with her to a secret castle on the forest very far away from his dad. There Mordred learnt thanks to his mother the art of witchcraft. Morgana wanted that her son kill his brother Arthur for Modred becoming the new king of Camelot.
Mordred grew up very fast thanks to the magic and when his father went to explore new lands he came up to the throne by saying to everyone that king Arthur had died.