The Suncat

Abducted fifteen years ago and raised by his father's enemies, Demyan Eliav has finally discovered his true identity: Crown Prince of Lorila. He scarcely has time to recover from the news before he's stabbed by a revolutionary, abducted by a smuggler, and imprisoned by a lord who has designs on the throne. 

Eliav thinks it's all over for him. Until his cousin appears in his cell, offering to assume his identity and take his place. Eliav accepts--he has little choice--and finds himself in a strange city, surrounded by political dissidents. For his own safety he adopts a dangerous disguise: Ulfrim the Giant, the mythical revolutionary and pamphleteer.

Books in the Estralony Cycle:
Wind Over Bone
Aloren
The Suncat