Eloping With The Princess by Robyn DeHart

Dukes, Earls, a lost princess and a plot to assassinate the queen. The Brotherhood of the Sword series is adventurous historical romance at its best!

A secret princess. A confirmed bachelor. The perfect marriage of convenience.

When a fellow member of the Brotherhood of the Sword drops off a mysterious lady in need of protection at the house of Viscount Jason Ellis, he agrees to keep her safe not fully knowing what that will entail. Once Isabel Crisp learns the truth of her identity, that she’s the last remaining member of the royal family from the island nation of Saldania, her world is tipped upside down.
A plot to usurp the throne from Victoria after a marriage comes to light. Isabel realizes rather quickly that if she were already married the men would not succeed with their plan. Jason reluctantly agrees to marry her, but in name only as he’s bound to learn the title to his brother’s son, the rightful heir. But keeping his hands off his tempting and willing wife proves too difficult and the passion between them ignites.