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
Duke of Sussex him. Instead, Prince Edward was created Earl of Wessex, and it was announced that he would eventually be created Duke of Edinburgh, a title currently held by his father, Prince Philip. There was again speculation that Prince William might be given the Sussex title on his wedding to Catherine Middleton in April 2011, but he was instead created Duke of Cambridge. On 19 May 2018 Prince Harry was created Duke of Sussex in England, Earl of Dumbarton in Scotland, and Baron Kilkeel in Northern Ireland to mark the occasion of his wedding to Meghan Markle, the first Duchess of Sussex.