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 he served with distinction in the Mediterranean and Pacific Fleets. After the war, Philip was granted permission by King George VI to marry Elizabeth. Before the official announcement of their engagement in July 1947, he abandoned his Greek and Danish royal titles and became a naturalised British subject, adopting the surname Mountbatten from his maternal grandparents. He married Elizabeth on 20 November 1947. Just before the wedding, he was created Baron Greenwich, Earl of Merioneth and Duke of Edinburgh. Philip left active military service when Elizabeth became monarch in 1952, having reached the rank of commander, and was formally made