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 Philip, Duke of Edinburgh asked the King for his daughter's hand in marriage. The King granted his request, provided that any formal engagement be delayed until Elizabeth's twenty-first birthday the following April. By March 1947, Philip had abandoned his Greek and Danish royal titles, had adopted the surname Mountbatten from his mother's family, and had become a naturalised British subject. The engagement was announced to the public on 10 July 1947. Though Philip appeared "always to have regarded himself as an Anglican", and he had attended Anglican services with his classmates and relations in England and throughout his Royal Navy days, he had been