(deWarenne Dynasty, #10)
With her mother's passing, Alexandra Bolton gave up on love to take care of her family. Now, with the Bolton name in disgrace due to her father's profligate ways, marrying an elderly squire might be the only way to save her family from absolute ruin. But when she meets the infamous Duke of Clarewood, old dreams—and old passions—are awakened as never before. Yet she cannot accept his shocking proposition! He is the wealthiest, most powerful peer in the realm, and having witnessed the cold horror of marriage as a child, he has vowed never to wed. But Alexandra Bolton inflames him as no woman has ever done, and she also serves him his first rejection! Now Clarewood—who always gets what he wants—will choose which rules to play by. But when passion finally brings them together, a terrible secret threatens to tear them apart....

Note- The deWarenne Dynasty is very vast and spans through multiple series:
* In chronological order, followed by the books that are distantly related

The Conqueror (deWarenne Dynasty, #1)
Promise of the Rose (deWarenne Dynasty, #2)
The Game (deWarenne Dynasty, #3)
Regency Era:
The Prize (deWarenne Dynasty, #4)
The Masquerade (deWarenne Dynasty, #5)
The Stolen Bride (deWarenne Dynasty, #6)
A Lady at Last (deWarenne Dynasty, #7)
The Perfect Bride (deWarenne Dynasty, #8)

Victorian Era:
A Dangerous Love (deWarenne Dynasty, #9)
An Impossible Attraction (deWarenne Dynasty, #10)
The Promise (deWarenne Dynasty, #11)

Contemporary Era:
House of Dreams

Related books:
Scandalous Love (Bragg Saga, #6)
After Innocence (Delanza, #2)
The Awakening (a novella included in the anthology Heart of the Home)