A Most Unsuitable Man — Jo Beverley

Damaris Myddleton never expected to inherit a vast fortune, but she's ready to use it to buy the most eligible title in England. When disappointed by a marquess, she simply sets her sights higher -- on a duke. But then there's plain Mr. Fitzroger, the dashing but penniless adventurer who first saves her from social disaster and then saves her life.
Entangled in mystery, danger, and forbidden intimacy, Damaris fights not to surrender her freedom and her heart to a most unsuitable man....

Hero: Octavius Fitzroger