The Lost Duke of Wyndham by Julia Quinn is the story of Grace Eversleigh, orphan companion to the Dowager Duchess of Wyndham for five long years, and Jack Audley, highwayman and, of course, "the lost Duke of Wyndham," an exact replica of his long-dead father, the Dowager Duchess' second son.
Thomas, the current Duke of Wyndham, is the son of the Dowager Duchess' third son. If Jack's parents were married, Thomas is no longer the Duke of Wyndham since Jack should have inherited the title when Thomas' (now deceased) father did, after the deaths of the Dowager Duchess' husband and eldest son. That also calls into question the marriage contract between Thomas and his fiance, Amelia, arranged by their fathers when they were children.
What happens to Thomas if Jack is identified as the legitimate heir? And what happens to Amelia? And how can Grace marry a Duke if Jack has the title?
p. 340 "He would not lose her. He did not care what he had to do to ensure their future, but ensure it he would. If Grace said that she could not marry the Duke of Wyndham, then he would not be the Duke of Wyndham. Surely there was some measure of his destiny that was still under his control."
This isn't my first Julia Quinn book, nor will it be my last since I enjoy her character development so much. I'm actually off to order the book about Thomas and Amelia. . . .
My overall personal rating of The Lost Duke of Wyndham is a B+.