Henri, Count of Paris (1908–1999) (English Wikipedia)

"ITALY: Million-Dollar Nuptials". Time. Time-Warner, Inc. 20 April 1931. Archived from the original on 15 December 2008. Retrieved 10 July 2011. Le Roi (who paid for the pageant) is that very rich man, with estates in Belgium, Italy and Morocco, who is better known as Monseigneur le Duc de Guise. As the father of the bridegroom, Le Roi fixed his thoughts last week on 1809. In that year, in this same Cathedral of Palermo, his ancestor Louis Philippe (then an exile like the Count of Paris today) married a Bourbon Princess and later became King of France (1830–48).
"ITALY: Million-Dollar Nuptials". Time. Time-Warner, Inc. 20 April 1931. Archived from the original on 15 December 2008. Retrieved 10 July 2011. Toasts flew merrily among a roster of guests which might have been torn from the program of an operetta: the Duke of Magenta; Prince & Princess Christopher of Greece; Prince Adam Czartoryski of Poland (at whose chateau the couple first met); the Infante Carlos (representing the King of Spain); the Danish sportsmen-princes Aage, Viggo and Erik; Count della Faille de Leverghem (representing Albert, King of the Belgians); ex-Queen Amelie of Portugal; Prince Philippe of Hesse (representing his father-in-law King Vittorio Emanuele of Italy) and Ambassador Sir Ronald William Graham, representing George V.

warhistoryonline.com

Budanovic, Nikola (29 April 2016). "10 Noblemen Who Fought in the French Foreign Legion". WarHistoryOnline.

Whitney, Craig R. (21 June 1999). "Henri VI, 90, the Orleans Heir Apparent to the Throne of France". New York Times. Archived from the original on 13 September 2017.
"ITALY: Million-Dollar Nuptials". Time. Time-Warner, Inc. 20 April 1931. Archived from the original on 15 December 2008. Retrieved 10 July 2011. Le Roi (who paid for the pageant) is that very rich man, with estates in Belgium, Italy and Morocco, who is better known as Monseigneur le Duc de Guise. As the father of the bridegroom, Le Roi fixed his thoughts last week on 1809. In that year, in this same Cathedral of Palermo, his ancestor Louis Philippe (then an exile like the Count of Paris today) married a Bourbon Princess and later became King of France (1830–48).
"ITALY: Million-Dollar Nuptials". Time. Time-Warner, Inc. 20 April 1931. Archived from the original on 15 December 2008. Retrieved 10 July 2011. Toasts flew merrily among a roster of guests which might have been torn from the program of an operetta: the Duke of Magenta; Prince & Princess Christopher of Greece; Prince Adam Czartoryski of Poland (at whose chateau the couple first met); the Infante Carlos (representing the King of Spain); the Danish sportsmen-princes Aage, Viggo and Erik; Count della Faille de Leverghem (representing Albert, King of the Belgians); ex-Queen Amelie of Portugal; Prince Philippe of Hesse (representing his father-in-law King Vittorio Emanuele of Italy) and Ambassador Sir Ronald William Graham, representing George V.

Valynseele, Joseph [in French] (1967). Les Prétendants aux Trônes d'Europe (in French). France: Saintard de la Rochelle. pp. 179, 186–187, 198, 201, 204, 207–209, 212.