Prince Jean, Duke of Guise king of France as "Jean III". The title was disputed by members of the Spanish Anjou branch of the family, descended from Louis XIV of France. He died in Larache, Morocco, in 1940. He was succeeded as claimant to the French throne by his only son, Henri d' Orléans, Count of Paris. In 1899, he married his first cousin, Isabelle d'Orléans (1878–1961). She was the younger sister of Philip VIII, and the daughter of Philip VII and Marie Isabelle d'Orléans. They had four children: Prince Jean, Duke of Guise Prince Jean of Orléans, Duke of Guise (Jean Pierre Clément Marie;
Prince Philip, Duke of Edinburgh in male line to the Danish House of Glücksburg, originally a cadet branch of the House of Oldenburg, which held several thrones and provided consorts to rulers of Russia and Great Britain in the 19th and 20th centuries. In 1993, scientists were able to confirm the identity of the remains of several members of Empress Alexandra of Russia's family, more than seventy years after their massacre in 1918, by comparing their mitochondrial DNA to living matrilineal relatives, including Prince Philip, her maternal grandnephew. Philip, Alexandra and her children are all descended from Princess Alice of the United Kingdom, the daughter