Prince Harry and Prince Andrew are portrayed in historian Andrew Lownie's new book as being quite adversarial toward each other. Their main beef, at least according to the book, is over Harry's wife Meghan Markle.

Appeals court revives dismissed lawsuit between Meghan Markle and half-sister Samantha Markle over defamation claims, with oral argument scheduled in September.

Meghan Markle‘s legal troubles with her half-sister, Samantha Markle, could potentially disrupt Prince Harry‘s life. Royal expert Ian Pelham Turner exclusively told Fox News that the legal battle might affect the Duke of Sussex’s efforts to end the years-long feud with the royal family and reconcile with his family members.