An Unexpected Passion — Paula Marshall

A historical romance novel based on fact -- committed bachelor, Lord Granville Leveson-Gower is now 35 years of age, and his beloved ex-mistress Henrietta, has asked him to consider taking a wife. She's willing to sacrifice him to the right woman -- in this case, her niece, Lady Harriet Cavendish. But can Harriet overcome her reluctance to wed her aunt's former lover to possibly achieve the greatest happiness she's ever known?