Diana Guardato
Diana Guardato was a member of the aristocratic Patrician Guardato family, and had three children with King Ferdinand I: Diana Guardato is the 16th- Great Grandmother of His Royal Highness Albert II of Belgium, 15th- Great Grandmother of His Majesty Juan Carlos
I of Spain, 17th- Great Grandmother of Philippe of Belgium, 14th- Great Grandmother of His Majesty Manuel II of Portugal, 16th- Great Grandmother of Grand Duke Henri, as well as many others.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Purnima (Hindi actress)
Purnima Das Verma( born Meherbhano Mohammad Ali) was an Indian film actress who worked predominantly in Hindi language films.
She is the grandmother of actor Emraan Hashmi.
Mona Hopton Bell
Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.
She was the grandmother of the painter Jean H. Bell.
Kaoru Hatoyama
After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama.
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.
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.
John I, Duke of Bourbon
Jean de Bourbon (1381–1434) was Duke of Bourbon, from 1410 to his death and Duke of Auvergne since 1416.
He was the eldest son of Louis II and Anne of Auvergne.
Through his mother, John inherited the County of Forez.
During the Armagnac–Burgundian Civil War he took sides against the Burgundians.
John was captured at the Battle of Agincourt and died a prisoner in London, in spite of the payment of several ransoms, and promises to support the king of England as king of France.
In 1400 in Paris, he married Marie, Duchess of Auvergne, daughter of John, Duke of Berry, who inherited the Auvergne title from her father.
They had three sons:
In addition, he had an illegitimate daughter:
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.

Question: Who is Charles I, Duke Of Bourbon's paternal grandmother?
Answer: Anne of Auvergne