Princess Françoise of Orléans (1844–1925)
Françoise of Orléans (Françoise Marie Amélie; 14 August 1844 – 28 October 1925) was a member of the House of Orléans and by marriage Duchess of Chartres.
Princess Isabelle of Isenburg
Princess Isabelle of Wied( born 1973) previously Princess of Isenburg is third child and second daughter of Franz Alexander, Prince of Isenburg, head of the mediatized House of Isenburg and his wife, Countess Christine von Saurma- Jelltsch.
By marriage Princess Isabelle was the wife of the Head of the House of Wied- Neuwied.
Once widowed that position went to her eldest son Maximilian, 9th Prince of Wied.
Princess Isabelle of Orléans (1878–1961)
Princess Isabelle of Orléans (Isabelle Marie Laure Mercédès Ferdinande; 7 May 1878 – 21 April 1961) was a member of the French Orleanist royal family and by marriage Duchess 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 third son and youngest child 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.
Prince Michel, Count of Évreux
Prince Michel of Orléans," fils de France", Count of Évreux( Michel Joseph Benoît Marie; born 25 June 1941, Rabat, Morocco) is a member of the House of Orléans which reigned over France between 1830 and 1848, a cadet branch of the royal House of Bourbon.
He is a younger son of Henri, Count of Paris, the Orleanist claimant to the French throne from 1940 to 1999, and of the author, Princess Isabelle of Orléans- Braganza.
Princess Isabelle of Orléans-Braganza
Princess Isabelle of Orléans- Braganza, Countess of Paris
( Isabelle Marie Amélie Louise Victoire Thérèse Jeanne; Eu, Seine- Maritime, 13 August 1911 – Paris, 5 July 2003), was a French historical author and consort of the Orléanist pretender, Henri, Count of Paris.
Prince Jacques, Duke of Orléans
Prince Jacques of Orléans, Duke of Orléans," fils de France"( Jacques Jean Jaroslaw Marie; born 25 June 1941 in Rabat, Morocco), is the son of Henri, Count of Paris( the Orléanist claimant to the French throne from 1940 until his death) and his wife, Princess Isabelle of Orléans- Braganza.
Princess Isabelle of Orléans (1900–1983)
Princess Isabelle Françoise Hélène Marie d'Orléans (27 November 1900,
Le Nouvion-en-Thiérache, France – 12 February 1983, Neuilly-sur-Seine, France) was a member of the House of Orléans and, by marriage, a member of the ducal Harcourt family and of the princely House of Murat.
She was one of the four children of Prince Jean, Duke of Guise (1874–1940), who would became the Orleanist pretender to the French throne in 1926, and his wife Princess Isabelle of Orléans.
Although born in France, her parents moved the family to Morocco in 1909, then a French colony.
She was with her mother and siblings visiting France when World War I broke out in 1914.
While her father sought in vain to obtain permission from the French government to serve in the military, the rest of the family hastened back to Morocco.
Princess Anne of Orléans
Princess Anne of Orléans(" Anne Hélène Marie"; 5 August 1906, Le Nouvion- en- Thiérache, Aisne – 19 March 1986, Sorrento) was a member of the House of Orléans and the Duchess of Aosta by marriage.
She was the daughter of Prince Jean, Duke of Guise and Princess Isabelle of Orléans.
Princess Anne, Duchess of Calabria
Princess Anne of Bourbon- Two Sicilies, Dowager Duchess of Calabria(" née" Princess Anne d' Orléans; born 4 December 1938) is the widow of Infante Carlos, Duke of Calabria.
She is the third daughter and fifth child of Prince Henri, Count of Paris( 1908 – 1999), Orléanist claimant to the defunct French throne, and his wife Princess Isabelle of Orléans- Braganza( 1911–2003).

Question: Who is Princess Isabelle Of Orléans (1900–1983)'s paternal grandfather?
Answer: Prince Robert, Duke of Chartres