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 Frederick, Duke of Gloucester and Edinburgh cross gules"), the whole differenced by a "label argent" (or "azure"). Prince William Frederick, Duke of Gloucester and Edinburgh Prince William, Duke of Gloucester and Edinburgh, (William Frederick; 15 January 1776 – 30 November 1834) was a great-grandson of King George II and nephew and son-in-law of King George III of the United Kingdom. Prince William was born on 15 January 1776 at Palazzo Teodoli in via del Corso, Rome. His father was Prince William, Duke of Gloucester and Edinburgh, the third son of the Prince of Wales. His mother was Maria, Duchess of Gloucester and Edinburgh, the illegitimate daughter