The Viking's Cursed Bride (Brothers of Thunder #1)
Mairibeth MacMillan

Jarl Tormod intends to settle on the Clyde and to marry a Briton. One as high-born as Aoife ought to ensure the safety and prosperity of the Norse settlement. When their relationship grows beyond convenience, loving one another may prove to be disastrous.
All Aoife wants is a place to belong, but when her family’s deception is revealed, a near-fatal betrayal in Tormod’s past threatens to destroy all hope for a peaceful and prosperous future.