Marriage of Mercy by Carla Kelly

From riches to rags, Grace has had to swallow her pride and get a job as a baker. But everything changes when she's the beneficiary of a surprise inheritance.

Her benefactor's deal comes with a catch: give up her life of toil and live in luxury only if she marries his illegitimate son, a prisoner of war. It's an offer she can't afford to refuse. But her husband-to-be is dying, and he begs her to take one of his men instead--to marry purely out of mercy....

A marriage of convenience with a complete stranger... Could this arrangement ever work?