The Knight of Rosecliffe by Rexanne Becnel

In the wildwood surrounding Rosecliffe Castle, Welsh rebels plot to destroy their English interlopers. Fiercely loyal to the Welsh cause, Rhonwen ap Tomas has nothing but hatred for the English--until destiny finds her seduced by her enemy, kissed into submission by a man she sought to kill, who now takes her prisoner.

Through Rhonwen saved his life when they were children, her role in the plot to destroy his family demands Jasper FitzHugh show no mercy to his beautiful captive. Yet he is ravaged by his desire to take this unruly vixen in his bed and show her that it is far more pleasurable to make love than war.

Caught up in a maelstrom of warring emotions, neither can predict the treachery that will force them to choose, once and for all, between their loyalties and their love...