My Lady Elizabeth — Lynda Lampert

SHE HAD THE SPIRIT OFA WARLORD...
With her father long dead and her brother, Thomas, on Crusade, Elizabeth of Wyndsbire commanded the family borders--leading her loyal men with uncommon cunning and fending off band after band of raiding Scots. But upon his return from battle, Elizabeth's brother assumed the defense of their vast earldom, and declares that she will be married off to the highest bidder--or die.

...BUT THE HEART OFA WOMAN
Alexander Dearborn, Thomas' most loyal knight, couldn't bear to see Elizabeth betrothed to another man--because he'd lost his heart to her himself. Yet duty to his liege stood in the way of his claiming her, until a stolen kiss revealed a yearning neither could deny. Torn between a knight's honor and the alluring maiden who roused his senses, Alex thundered onto the battlefield of the heart... where all could be won--or lost.