The Heirs of Hammerfell
The Heirs of Hammerfell by Marion Zimmer Bradley
Darkover--planet of the Bloody Sun, world of legend and mystery, the long-lost Terran colony where an ancient power has awakened humans to their own hidden talents of laran, that special magic through which those gifted enough can communicated directly mind to mind, call up fire, even link their thoughts to control bird or beast.
Set in the age of The Hundred Kingdoms, The Heirs of Hammerfull takes place in a time of war and strife when Darkover was divided by border conflicts into numerous small, antagonistic kingdoms. It focuses on a devastating clan feud between two of these realms--Hammerfull and Storn--a feud which has seen the land soaked red with blood for countless generations. But now Storn has struck what my prove Hammerfell's death stroke, setting the ancestral castle ablaze, slaying its lord, and sending its lady fleeing into the night with her twin infant sons, Alastair and Gonn.
Gonn is separated from his mother and lost her on that fateful night, but she and Alastair find sanctuary in Thendara Cit, among the wealthy and the Iaran-gifted, keeping the memory of Hammerfell alive with them in exile. Yet Gonn, too, survives, rescued by a loyal servant and raised in secret among those who would see the might of Storn overthrown and the banner of Hammerfell flying proudly high once again.
But it is not until Gonn's Iaran manifests that the fates of the twins are finally, inextricably linked in a pattern which could bring a new beginning or total ruin to Hammerfell and it's heirs...