Anne Herries 
Matter of Honor [EPUB ebook] 

A surprising solution!Lord Vincent Carlton requests that his mother invite Miss Cassandra Thornton for a visit. Having recently become an heiress, Cassie knows she needs help to bring her into style, but at least she can now afford to be selective about the man she’ll marry.Unbeknownst to her, however, her late brother had made five of his friends promise that, should he die, one would marry Cassie—and Lord Vincent had drawn the short straw….