Louise Élisabeth de Bourbon
Louise Élisabeth de Bourbon( Louise Élisabeth; 22 November 1693 – 27 May 1775) was a daughter of Louis III de Bourbon, Prince of Condé, and his wife, Louise Françoise de Bourbon," légitimée de France", a legitimised daughter of King Louis XIV of France and his famous mistress, Madame de Montespan.
She was the wife of Louis Armand II de Bourbon," Prince of Conti".
It was Louise Élisabeth who presented Madame de Pompadour to the court of King Louis XV of France; she also built the Hôtel de Brienne, present seat of the French Ministry of Defence.
Louise Élisabeth was the Duchess of Étampes in her own right, having succeeded to the title at the death of her aunt, Marie Anne de Bourbon, Dowager Duchess of Vendôme.
The county of Sancerre, previously held by her brother, Louis Henri I, Prince of Condé, also became her property in 1740 at his death.
Isabella of Ibelin (died 1315)
Isabella of Ibelin( died 1315) was the daughter of Baldwin of Ibelin( d. 1313), lord of Korakou, and of Marguerite de Giblet.
François, Duke of Montpensier
François de Bourbon( 1542 – 4 June 1592) was the Duke of Montpensier and member of the House of Bourbon.
He was the brother of Charlotte de Bourbon, Princess of Orange and wife of William the Silent," Prince of Orange".
He was the great grandfather of" La Grande Mademoiselle" cousin of Louis XIV.
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Charles I, Duke of Bourbon
Charles de Bourbon (1401 – 4 December 1456, Château de Moulins) was the oldest son of John I, Duke of Bourbon and Marie, Duchess of Auvergne.
He was Count of Clermont-en-Beauvaisis from 1424, and Duke of Bourbon and Auvergne from 1434 to his death, although due to the imprisonment of his father after the Battle of Agincourt, he acquired control of the duchy more than eighteen years before his father's death.
In 1425, Charles renewed his earlier betrothal by marrying Agnes of Burgundy (1407–1476), daughter of John the Fearless.
Charles entered a relationship with Jeanne de Bournan, together they had Louis de Bourbon, Count of Roussillon.
Louis founded the House of Bourbon-Roussillon (Rossello).
Louis is known for his many services to the State.
As a reward for his loyalty and dedication to Louis XI during the League of the Public Weal conflict, Louis XI gave him in marriage his legitimized daughter Jeanne de Valois.
Charles served with distinction in the Royal army during the Hundred Years' War, while nevertheless maintaining a truce with his brother-in-law and otherwise enemy, Philip III, Duke of Burgundy.
Both dukes were reconciled and signed an alliance by 1440.
He was present at the coronation of Charles VII where he fulfilled the function of a peer and conferred knighthood.
Despite this service, he took part in the "Praguerie" (a revolt by the French nobles against Charles VII) in 1439–1440.
When the revolt collapsed, he was forced to beg for mercy from the King, and was stripped of some of his lands.
He died on his estates in 1456.
Louis, Duke of Montpensier
Louis de Bourbon (10 June 1513 – 23 September 1582) was the second Duke of Montpensier.
He was the great great grandfather of "la Grande Mademoiselle".
Marguerite de Baugé
Marguerite de Baugé( 1200- 1252) was also known as Marguerite de Bâgé, as Marguerite de Baujé and as the Dame de Mirabel.
Louis François, Prince of Conti
Louis François de Bourbon, or Louis François I, Prince of Conti( 13 August 1717 – 2 August 1776), was a French nobleman, who was the Prince of Conti from 1727 to his death, following his father, Louis Armand II de Bourbon.
His mother was Louise Élisabeth de Bourbon, the daughter of Louis III, Prince of Condé and Louise Françoise de Bourbon, legitimized daughter of King Louis XIV of France.
His younger sister, Louise Henriette de Bourbon, was the mother of" Philippe Égalité".
As a member of the reigning House of Bourbon, he was a Prince du Sang.
Louise Anne de Bourbon
Louise Anne de Bourbon," Mademoiselle de Charolais"( 23 June 1695 – 8 April 1758) was a French noblewoman, the daughter of Louis III de Bourbon, Prince of Condé.
Her father was the grandson of" le Grand Condé", while her mother, Louise Françoise de Bourbon, was the eldest surviving legitimised daughter of Louis XIV of France and his" maîtresse- en- titre", Madame de Montespan.
Margaret of Bourbon (1438–1483)
Margaret of Bourbon (5 February 1438 – 24 April 1483) was the daughter of Charles I, Duke of Bourbon (1401–1456) and Agnes of Burgundy (1407–1476).
On 6 April 1472, she became the first wife of Philip II, Duke of Savoy (1443–1497).
Her children from this marriage were:
She died on 24 April 1483 at the Chateau de Pont d'Ain.

Question: Who is the paternal grandfather of Margaret Of Bourbon (1438–1483)?
Answer: John I, Duke of Bourbon