Prince Jean, Duke of Guise Prince Jean, Duke of Guise Prince Jean of Orléans, Duke of Guise (Jean Pierre Clément Marie; 4 September 1874 – 25 August 1940), was the son of Prince Robert, Duke of Chartres (1840–1910), grandson of Prince Ferdinand Philippe and great-grandson of Louis Philippe I, King of the French. His mother was Françoise of Orléans, daughter of François, Prince of Joinville, and Princess Francisca of Brazil. Upon the death of his cousin and brother-in-law Philippe, Duke of Orléans, claimant to the throne of France as "Philip VIII", the Duke of Guise became, at least for his Orleanist and Unionist supporters, titular
Prince William Henry, Duke of Gloucester and Edinburgh Yorkshire). Her mother was the Duke's mistress Lady Almeria Carpenter, a daughter of the first Earl of Tyrconnell. Louisa was married on 29 December 1803 in Norwich, Norfolk to Godfrey Macdonald, 11th Baronet Macdonald of Slate, later the 3rd Baron Macdonald of Slate. They had three children born before their marriage (legitimized by Scottish law, but not by Irish law) and ten children born after their marriage. (A previous marriage in Scotland was considered of doubtful validity.) These children and their posterity are the only descendants of Prince William, 1st Duke of Gloucester and Edinburgh. The Duke died at Gloucester