An American in Duke's Clothing - Mindy Burbidge Strunk

When unexpected deaths leave Tad Wentworth as the heir to an English title, he leaves his American homeland to fulfill his duty. Upon arriving in the country, he discovers an arranged marriage is part of the plan. But when his affections guide him toward a different lady, he must decide if he will follow his heart or his head.

Violet Allen's questionable past has left her with few friends. When she meets a dashing stranger who shows interest in her, she allows herself to dream of a future with him. Until she discovers the stranger is not only a Duke but is also engaged to her sister. As her feelings for him grow, she must decide if she will be loyal to her sister or her heart.