The genuine copies of letters which passed between His Royal Highness the Duke of Cumberland and Lady Grosvenor [electronic resource] : Her Ladyship's letters to the Hon. Miss Vernon, Maid Of Honour To The Queen, the anonymous letters, signed Jack Spratt, Which Were Sent To Lord Grosvenor; Another signed T. Trusty, sent to Lady Grosvenor, And one from Miss Vernon to her Ladyship, Part of Which Were Never Before Published. To which is prefixed, a clear and Circumstantial account of the trial in the Court of King's Bench, on the 5th of July 1770; wherein the Rt: Hon. Lord Grosvenor was plaintiff, and His Royal Highness the Duke of Cumberland, defendant, for Criminal Conversation with the Plaintiff's Wife.