by Melanie Rawn ~ consisting of 3 books:

Dragon Prince

Rohan, Prince of the Desert, is newly come to the throne. He must outwit the High Prince in order to protect his vast lands and to maintain peace throughout the world. Sioned, a Sunrunner witch and his chosen bride, must help him in this dangerous quest.

The Star Scroll

With Rohan crowned High Prince and his Sunrunner wife Sioned, High Princess, both swore to keep the peace throughout the Continent and preserve the secret of the dragons, an inheritance they would pass on to their only child, Pol, heir to both princely and Sunrunner powers.

But not all plans of evil and power have ended with High Prince Roelstra's death. As Pol grows to manhood, other young men are being trained for a bloody battle of succession. Young men long believed dead....

Yet not all enemies are fighting merely with words or swords. For a former foe of the Sunrunners is back, and the only hope of defeating these masters of dark sorcery lay in reclaiming the knowledge to carefully concealed in the long-lost Star Scroll.

Sunrunner's Fire

With the death of the Lady of Goddess Keep, the new Lord of Goddess Keep Andry sets out to rework the teachings and rituals of Goddess Keep based on the findings of the Star Scroll.

In the Desert Prince Pol comes of age and seeks to become the man and Prince that his parents, High Prince Rohan and High Princess Sioned raised him to be.

But not all is well in the world as old foes come calling and wielders of a different magic make rise for old power and glory once more.

from Wikipedia (http://www.wikipedia.org)