The Last Dragon: Twilight of the Celts Book 1

The first part in an epic sequel to M.K. Hume's King Arthur trilogy The legend of King Arthur lives on...King Artor lies slain and Ector, a mere boy, is acknowledged as the legitimate heir to the kingdom. But the land of the Celts is weakened and Ector grows up torn between a sense of doom and duty. Meanwhile, in the Forest of Arden, it is revealed to young Arthur that he is the Bastard Prince, son of King Artor and Lady Elayne.
Trained in the skills of a warrior, Arthur cannot challenge the position of his ruler and childhood friend, but nor can he stand back and watch Briton crumble under the threat of invasion. As the Last Dragon, he must ensure that his father's legacy lives on...