Prince Jean, Duke of Guise

Prince Jean of Orléans, Duke of Guise (Jean Pierre Clément Marie; 4 September 1874 – 25 August 1940), was the third son and youngest child of Prince Robert, Duke of Chartres (1840–1910), grandson of Prince Ferdinand Philippe and great-grandson of King Louis Philippe I of the French. His mother was Princess Françoise of Orléans, daughter of François, Prince of Joinville, and Princess Francisca of Brazil. He was the Orléanist claimant to the throne of France as Jean III.

Marriage
On 30 October 1899, Jean married his first cousin, Isabelle d'Orléans. Younger sister of Philip VIII, and the daughter of Philip VII and Princess Marie Isabelle of Orléans.

Issue

 * 1) Princess Isabelle of Orléans (27 November 1900 – 12 February 1983) First married Bruno, Count of Harcourt and then to Prince Pierre Murat.
 * 2) Princess Françoise of Orléans (1902–1953) married Christopher of Greece and Denmark and had issue.
 * 3) Princess Anne of Orléans (5 August 1906 – 19 March 1986). She married Prince Amedeo, Duke of Aosta and had issue.
 * 4) Prince Henri of Orléans, Count of Paris ( 5 July 1908 – 19 June 1999) married Princess Isabelle of Orléans-Braganza and had issue.

Titles and styles

 * 4 September 1874 - 30 October 1899 His Royal Highness Prince Jean of Orléans.
 * 30 October 1899 - 25 August 1940 His Royal Highness The Duke of Guise.