This is Arthur Pendragon, but he also is called King of Camelot, Courage, Princess (Gwaine),Clotpole, Prat, Dollophead, Cabbage-Head, Turnip-Head, Simpleton, Ass, Royal Ass ( Merlin). Merlin just loves calling Arthur names, but there is also one name that all is known between the druids.
Arthur is The Once and Future King
Arthur Pendragon was the only child of Uther Pendragon and Ygraine de Bois, the husband of Queen Guinevere, brother-in-law to Sir Elyan, son-in-law to Tom the blacksmith, the half brother of Morgana, the nephew of Tristan de Bois and Agravaine de Bois, and the best friend and master of the greatest warlock and sorcerer ever, Merlin.
According to the prophesies of Kilgharrah, one of the last dragons, Arthur is destined to unite the land of Albion. As a young prince, Arthur was spoiled, narrow-minded, and arrogant, though good-hearted; as time passed, he eventually matured and became best friends with his manservant, Merlin. This was partially due to his dislike of the way his father ruled, and also because of the influence Merlin had on him. Arthur tended to have negative opinions about Uther’s harsher policies, particularly his aversion to magic, but during his reign he kept his father’s decree banning magical practice due to his war with Morgana.
Arthur’s great conviction is in peace and justice, and during his reign he revived the Round Table and managed to establish peace between the five kingdoms for the first time in centuries. Arthur died at the hands of Mordred by the shores of Avalon, but, as the Once and Future King, he is destined to one day rise again.