Margaret of France, Duchess of Brabant
Margaret of France( 1254–1271) was a daughter of Louis IX of France and his wife Margaret of Provence.
She was a member of the House of Capet and was Duchess of Brabant by her marriage to John I, Duke of Brabant.
Louisa Montagu Douglas Scott, Duchess of Buccleuch
Louisa Jane Montagu Douglas Scott, Duchess of Buccleuch and Queensberry( 26 August 1836 – 16 March 1912) was the daughter of James Hamilton, 1st Duke of Abercorn.
In 1884, she became the Duchess of Buccleuch and Duchess of Queensberry, the wife of William Henry Walter Montagu Douglas Scott, 6th Duke of Buccleuch& 8th Duke of Queensberry.
She was the paternal grandmother of Princess Alice, Duchess of Gloucester and of Marian Louisa, Lady Elmhirst, as well as the maternal great- grandmother of Prince William of Gloucester, Prince Richard, Duke of Gloucester and great- great- grandmother of Sarah, Duchess of York.
Tjuyu
Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.
She is the grandmother of Akhenaten, and great grandmother of Tutankhamun.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Margaret of Nevers
Margaret of Nevers( December 1393 – February 1442), also known as Margaret of Burgundy, was Dauphine of France and Duchess of Guyenne as the daughter- in- law of King Charles VI of France.
A pawn in the dynastic struggles between her family and in- laws during the Hundred Years' War, Margaret was twice envisaged to become Queen of France.
Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.
Anne Denman
Anne Denman( 1587–1661) was born in Olde Hall, Retford, Nottinghamshire.
Through a fortunate second marriage with Thomas Aylesbury, she became the grandmother of Lady Anne Hyde, Duchess of York and great- grandmother of Queen Mary II and Queen Anne.
Francis I of France
Francis I (12 September 1494 – 31 March 1547) was King of France from 1515 until his death in 1547.
He was the son of Charles, Count of Angoulême, and Louise of Savoy.
He succeeded his cousin and father-in-law Louis XII, who died without a son.
A prodigious patron of the arts, he initiated the French Renaissance by attracting many Italian artists to work on the Château de Chambord, including Leonardo da Vinci, who brought the "Mona Lisa" with him, which Francis had acquired.
Francis' reign saw important cultural changes with the rise of absolute monarchy in France, the spread of humanism and Protestantism, and the beginning of French exploration of the New World.
Jacques Cartier and others claimed lands in the Americas for France and paved the way for the expansion of the first French colonial empire.
For his role in the development and promotion of a standardized French language, he became known as "le Père et Restaurateur des Lettres" (the "Father and Restorer of Letters").
He was also known as "François du Grand NezFrancis of the Large Nose"), the "Grand Colas", and the "Roi-Chevalier" (the "Knight-King") for his personal involvement in the wars against his great rival Emperor Charles V, who was also King of Spain.
Following the policy of his predecessors, Francis continued the Italian Wars.
The succession of Charles V to the Burgundian Netherlands, the throne of Spain, and his subsequent election as Holy Roman Emperor meant that France was geographically encircled by the Habsburg monarchy.
In his struggle against Imperial hegemony, he sought the support of Henry VIII of England at the Field of the Cloth of Gold.
When this was unsuccessful, he formed a Franco-Ottoman alliance with the Muslim sultan Suleiman the Magnificent, a controversial move for a Christian king at the time.
Margaret of France, Duchess of Berry
Margaret of France, Duchess of Berry (French: "Marguerite de Valois")
(5 June 1523 – 15 September 1574) was the daughter of King Francis I of France and Claude, Duchess of Brittany.
Isabella of Savoy
Isabella of Savoy (11 March 1591 – 28 August 1626) was a daughter of Charles Emmanuel I, Duke of Savoy, and Catherine Michelle of Spain.
Her maternal grandparents were Philip II of Spain and Elisabeth of Valois, her paternal grandparents were Emmanuel Philibert, Duke of Savoy and Margaret of France, Duchess of Berry.
She was the Hereditary Princess of Modena, dying before her husband succeeded to the Duchy of Modena in 1628.

Question: Who is the paternal grandmother of Margaret Of France, Duchess Of Berry?
Answer: Louise of Savoy