An Offer of Marriage — Jo Ann Ferguson

HATED ENEMY...
Marriage to the vile Thane Morcar of England was Lady Cyndra's destiny from the day the barbaric Vikings had stormed her family's home -- until handsome Brenwyn of Manor Darburg rescued her from that cruel fate. In Brenwyn, Cyndra believed she had found a warrior worthy of a lady's love, not realizing that her rugged protector was none other than a Viking himself -- and her family's mortal foe.

...OR BELOVED BRIDEGROOM?
Honor had driven Brenwyn to steal Morcar's bride, but it was fierce passion that drove him to seduce sweet Cyndra, though he knew she was forbidden to him. Now, as he held her in his arms, Brenwyn hoped that she would see the man beneath the enemy armor. For only if he won her heart, could he truly claim this noble beauty as his own.