Marriage by Scandal, book 1: The Earl's Inconvenient Wife
Ruth Ann Nordin2012

Nathaniel Buford, Earl of Roderick, doesn't want a wife, but his brother died, passing on the title of earl to him. Now he is bound by duty to get an heir. Unfortunately, to get the heir, he must find a wife. As luck would have it, he gets caught in a scandalous situation not of his doing, and the next thing he knows, he's married...and to a lady whose family is reported to desire money above all else.

Miss Claire Lowell wanted to get married. But she never intended to marry a gentleman who felt trapped into it, and she certainly never thought her family would have a hand in the scandal that forced Lord Roderick's hand in marriage. Can love find a way to thrive under such conditions or will her father's eagerness to see her married off to an earl condemn her to a loveless marriage?