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 Wilhelm, Duke of Södermanland Russian tsar, Nicholas II and of Prince Philip, Duke of Edinburgh. The couple had only one son: Prince Lennart, Duke of Småland and later Count of Wisborg (1909–2004). The marriage was unhappy. Their son, Lennart, later wrote an autobiography in which he revealed several details of the Swedish royal family. The autobiography tells of how Maria, like her aunt and namesake the duchess of Saxe-Coburg and Gotha, felt that she had married beneath herself in marrying a younger son of the king of Sweden, and this caused problems of ego between the couple. Maria insisted that the servants address her