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.
Louis Philippe I
Louis Philippe I (6 October 1773 – 26 August 1850) was King of the French from 1830 to 1848.
As Duke of Chartres he distinguished himself commanding troops during the Revolutionary Wars but broke with the Republic over its decision to execute King Louis XVI.
He fled to Switzerland in 1793 after being connected with a plot to restore France's monarchy.
His father Louis Philippe II, Duke of Orléans (Philippe Égalité) fell under suspicion and was executed, and Louis Philippe remained in exile for 21 years until the Bourbon Restoration.
He was proclaimed king in 1830 after his cousin Charles X was forced to abdicate by the July Revolution.
The reign of Louis Philippe is known as the July Monarchy and was dominated by wealthy industrialists and bankers.
He followed conservative policies, especially under the influence of French statesman François Guizot during the period 1840–48.
He also promoted friendship with Britain and sponsored colonial expansion, notably the French conquest of Algeria.
His popularity faded as economic conditions in France deteriorated in 1847, and he was forced to abdicate after the outbreak of the French Revolution of 1848.
He lived out his life in exile in the United Kingdom.
His supporters were known as Orléanists, as opposed to Legitimists who supported the main line of the House of Bourbon.
Prince Henri of Orléans
Prince Henri of Orléans( 16 October 1867 – 9 August 1901) was the son of Prince Robert, Duke of Chartres, and Princess Françoise of Orléans.
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 Charles Louis, Duke of Chartres
Prince Charles Louis of Orléans, Duke of Chartres( Charles Louis Henri Foulques Benoît Elzéar Jean Marie; born 28 July 1972) is the elder son of Prince Jacques, Duke of Orléans and Gersende de Sabran- Pontevès.
François d'Orléans, Prince of Joinville
François-Ferdinand-Philippe-Louis-Marie d'Orléans, prince de Joinville (14 August 1818 – 16 June 1900) was the third son of Louis Philippe, Duke of Orléans, afterwards king of the French and his wife Marie Amalie of Bourbon-Sicilies.
He was an admiral of the French Navy, and a talented artist.
Alexander Vlahos
Alexander Vlahos( born 30 July 1988) is a Welsh actor best known for playing Philippe, Duke of Orléans, in the Canal+ television series" Versailles" and for playing Mordred in the BBC drama" Merlin".
Prince Philippe, Duke of Orléans (1869–1926)
Philippe, Duke of Orléans( Prince Louis Philippe Robert d' Orléans; 6 February 1869 – 28 March 1926) was the Orléanist claimant to the throne of France from 1894 to 1926.
Prince Robert, Duke of Chartres
Prince Robert Philippe Louis Eugène Ferdinand of Orléans, Duke of Chartres( November 9, 1840 – December 5, 1910) was the son of Prince Ferdinand Philippe, Duke of Orléans, and thus grandson of King Louis- Philippe of France.
He fought for the Union in the American Civil War, and then for France in the 1870 Franco- Prussian War.
In 1863 he married his cousin Princess Françoise of Orléans, the daughter of François, Prince of Joinville.
In 1886, he was exiled from France.
Ferdinand Philippe, Duke of Orléans
Prince Ferdinand Philippe of Orléans (3 September 1810 – 13 July 1842) was the eldest son of Louis Philippe d'Orléans, Duke of Orléans (the future King Louis Philippe I) and Maria Amalia of Naples and Sicily.
Born in exile in his mother's native Sicily, he was heir to the House of Orléans from birth.
Following his father's succession as King of the French in 1830, he became the "Prince Royal" and subsequently Duke of Orléans (French: "Duc d'Orléans"), the title by which he is best known.
He died in 1842, never to succeed his father or see the collapse of the July Monarchy and subsequent exile of his family to England.

Question: Who is the paternal grandfather of Ferdinand Philippe, Duke Of Orléans?