The Briar King

Two thousand years ago, the Born Queen defeated the Skasloi lords, freeing humans from the bitter yoke of slavery. But now monstrous creatures roam the land--and destinies become inextricably entangled in a drama of power and seduction. The king's woodsman, a rebellious girl, a young priest, a roguish adventurer, and a young man made suddenly into a knight--all face malevolent forces that shake the foundations of the kingdom, even as the Briar King, legendary harbinger of death, awakens from his slumber. At the heart of this many-layered tale is Anne Dare, youngest daughter of the royal family . . . upon whom the fate of her world may depend.

This is #1 in The Kingdoms Of Thorn And Bone.