Conquests: Hearts Rule Kingdoms (Hearts Rule Kingdoms #1)
Emily Murdoch

But when King William decrees that Norman lords must marry Anglo-Saxon women Avis must make a terrible choice. Either marry the repulsive Richard or else take a chance on another Norman, Melville, a man she has never met.
Soon she realizes that survival in a time of turmoil and war depends on putting aside the prejudices of the past.
Conquests is a brilliantly researched and involving historical drama that is perfect for fans of Alison Weir and Philippa Gregory.