Prince Robert, Duke of Chartres, was the son of Prince Ferdinand Philippe, Duke of Orléans, and thus, a grandson of King Louis Philippe I of France. He fought for the Union in the American Civil War,
Prince Robert, c. 1900
Robert d'Orleans, Duc de Chartres, as Captain in the U.S. Volunteers, 1862
Prince Robert, c. 1860s
Prince Jean, Duke of Guise
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Jean d'Orléans was Orléanist pretender to the defunct French throne as Jean III. He used the courtesy title of Duke of Guise.
Prince Robert, Duke of Chartres
…1869 – 31 January 1940), who in 1896 married Marie Armand Patrice de Mac Mahon, Duke of Magenta, son of Patrice de Mac-Mahon, 1st Duke of Magenta. Prince Jean d'Orléans (4 September 1874 – 25 August 1940), "Duke of Guise" and Orléanist pretender to the throne of France as "Jean III", who in 1899 married his first cousin…
Jean d'Orléans