Title: Prince Ferdinand, Duke of Alençon
Content:  Ferdinand Philippe Marie d'Orléans, duc d'Alençon (12 July 1844 – 29 June 1910) was the son of Louis Charles Philippe Raphael d'Orléans, Duke of Nemours and Princess Victoria of Saxe-Coburg and Gotha (a first cousin of Britain's Queen Victoria).
Title: Counts and dukes of Alençon
Content: Prince Ferdinand Philippe, Duke of Alençon (1844–1910) 
Title: Prince Ferdinand, Duke of Alençon
Content:  Prince Ferdinand of Orléans was born on 12 July 1844. He was the son of Prince Louis, Duke of Nemours, and Princess Victoria of Saxe-Coburg and Gotha, cousin of Queen Victoria. Among his siblings was older brother Prince Gaston of Orleans, Count of Eu, the Imperial consort of Brazil (through his marriage to Isabel, Princess Imperial of Brazil), and younger sister Princess Marguerite Adélaïde of Orléans, wife of Prince Władysław Czartoryski. His paternal grandparents were Maria Amalia of Naples and Sicily, Queen consort of the French, and King Louis Philippe, who was forced to abdicate after the outbreak of the French Revolution of 1848. His maternal grandparents were Prince Ferdinand of Saxe-Coburg and Gotha and Princess Maria Antonia Koháry.
Title: Counts and dukes of Alençon
Content:  in 1540. The title was given as a jointure to Catherine de' Medici in 1559, and as an appanage to her youngest son Francis in 1566. The title was pawned by Henry IV to the duke of Wūrttemberg, and subsequently it passed to Gaston, Duke of Orléans, by grant of Louis XIII; to Elizabeth of Orléans, duchess of Guise; to Charles, duke of Berry, grandson of Louis XIV (1710); and to Monsieur (later Louis XVIII), brother of Louis XVI. The title of duc d'Alençon was last given to Ferdinand of Orléans, son of the duc de Nemours, and grandson of Louis-Philippe.
Title: René, Duke of Alençon
Content:  René of Alençon (1454 – 1 November 1492) was a French nobleman. He succeeded his father John II of Alençon as Duke of Alençon.
Title: Prince Emmanuel, Duke of Vendôme
Content:  Emmanuel was born in Obermais, Meran on 18 January 1872. He was the second child and only son of Ferdinand Philippe d'Orléans, Duke of Alençon and his wife Duchess Sophie Charlotte in Bavaria. His mother was the famed duchesse d'Alençon who died in a fire at a charity bazaar in Paris on 4 May 1897. His older sister, Louise d'Orléans, married Prince Alfons of Bavaria. His paternal grandparents were Prince Louis, Duke of Nemours (son of Queen Maria and King Louis Philippe, who was forced to abdicate after the outbreak of the French Revolution of 1848) and Princess Victoria of Saxe-Coburg and Gotha (a first cousin of Queen Victoria). His maternal grandparents were Duke Maximilian Joseph in Bavaria and Princess Ludovika of Bavaria.
Title: René, Duke of Alençon
Content:  René was born in 1454 to the House of Valois-Alençon. He was the son of John II of Alençon and Marie of Armagnac. In 1478, he was restored as Duke of Alençon and Count of Perche, titles which had been confiscated from his family after his father's conviction in 1474.
Title: Counts and dukes of Alençon
Content:  The first line of Counts of Alençon came from the House of Belleme, who ruled from the 10th to the early 13th centuries. In 1217 Alençon was granted as an appanage to Pierre, son of Louis IX of France (1268) and then to Charles, count of Valois, brother of Philip IV (1293). A third house of Alençon counts descended from Charles, second son of the Count of Valois, who was killed at the Battle of Crécy in 1346. The county of Alençon was raised to a dukedom in 1414. Jean, 1st Duc d'Alençon, was killed at Agincourt, 1415, after having with his 
Title: Charles IV, Duke of Alençon
Content:  Charles IV of Alençon (2 September 1489 in Alençon – 11 April 1525 in Lyon) was the son of René of Alençon and Margaret of Vaudémont. He succeeded his father in 1492 as Duke of Alençon and Count of Perche, and was also Count of Armagnac, Fézensac, Viscount of Rodez, Count of Fezensaguet, l'Isle-Jourdain, and Perdiac. In 1509 he married Margaret of Angoulême, sister to Francis, Duke of Valois, who would in 1515 become King Francis I of France. Their marriage was childless: his wife was allowed to retain most of his titles. As first prince of the blood, Charles was 
Title: Anne of Alençon
Content:  Anne was the third child of René, Duke of Alençon and his second wife Margaret of Lorraine, daughter of Frederick, Count of Vaudémont and Yolande of Anjou. Her father died two days after her birth. 

Question: Who is the father of Prince Ferdinand, Duke of Alençon?
Answer: Prince Louis, Duke of Nemours.