Dragon's Heirs is a series of historical novels by the ethnohistorian Courtway Jones. The books are set in a highly tribal post-Roman Britain.

In the Shadow of the Oak King (1992). From the building of Camelot to the tempering of Arthur's allies Gawaine, King Ban, and Lancelot, this tale of love, loyalty, and war reveals a fascinating world where battles are won by faith as well as force, and peace is as elusive as the mist of time itself.

Witch of the North (1992) A novel focusing on the beautiful and mysterious Morgan Le Fay, King Arthur's half-sister who was raised to become a seductress but instead became a powerful ruler.

A Prince of Camelot (1995) Saved from a shipwreck and raised in remote idyll, the child known as Dylan the Orphan was marked from the first as different.
Malory: The Green Knight (2015) Not a continuation of the Dragon Heir's Trilogy but a related Arthurian work.