The Domains of Koryphon — Jack Vance

The Domains of Koryphon (The Gray Prince, Russian translation)

The races of Koryphon keep an uneasy peace -- the swift, nomadic Wind-runners, the fierce Uldras, and the aristocratic Outkers. For over two hundred years the Outkers have occupied the Alouan lands, living in baronial splendor where Uldra chieftains once ruled. When the self-proclaimed "Gray Prince" leads Uldras in an onslaught to expunge the Outkers from ancestral lands, he faces a challenge not only from the Outkers but from history itself!