Isabella of Bourbon
Isabella of Bourbon, Countess of Charolais( 1434 – 25 September 1465) was the second wife of Charles the Bold, Count of Charolais and future Duke of Burgundy.
She was a daughter of Charles I, Duke of Bourbon and Agnes of Burgundy, and the mother of Mary of Burgundy, heiress of Burgundy.
Sibylla of Burgundy, Duchess of Burgundy
Sybilla of Burgundy (1065–1103), was a French noble, Duchess consort of Burgundy by marriage to Eudes I, Duke of Burgundy.
She was a daughter of William I, Count of Burgundy and Stephanie.
She was married to Eudes I, Duke of Burgundy in 1080.
Children:
Joan III, Countess of Burgundy
Joan III of Burgundy( 1/2 May 1308 – 10/15 August 1347), also known as Joan of France was a reigning Countess of Burgundy and Artois in 1330 – 1349, She was also Duchess of Burgundy by marriage to Odo IV, Duke of Burgundy.
She was the eldest daughter of King Philip V of France and Countess Joan II of Burgundy.
Yolande of Dreux, Duchess of Burgundy
Yolande of Dreux( 1212–1248) was Duchess of Burgundy as the first wife of Hugh IV of Burgundy( duke of Burgundy between 1218 and 1271).
She was the daughter of Count Robert III" Gasteblé" of Dreux and of Braine, and his wife Alianor de St. Valéry.
William I, Count of Burgundy
William I (1020 – 12 November 1087), called the Great ("le Grand" or "Tête Hardiethe Stubborn"), was Count of Burgundy from 1057 to 1087 and Mâcon from 1078 to 1087.
He was a son of Renaud I and Alice of Normandy, daughter of Richard II, Duke of Normandy.
William was the father of several notable children, including Pope Callixtus II.
In 1057, he succeeded his father and reigned over a territory larger than that of the Franche-Comté itself.
In 1087, he died in Besançon, Prince-Archbishopric of Besançon, Holy Roman Empire -- an independent city within the County of Burgundy.
He was buried in Besançon's Cathedral of St John.
William married a woman named (a.k.a. Etiennette).
Children of Stephanie (order uncertain):
Hugh IV, Duke of Burgundy
Hugh IV of Burgundy( 9 March 1213 – 27 or 30 October 1272) was Duke of Burgundy between 1218 and 1272.
Hugh was the son of Odo III, Duke of Burgundy and Alice de Vergy.
Agnes of France, Duchess of Burgundy
Agnes of France( c. 1260 – 19 December 1327) was a Duchess of Burgundy by marriage to Robert II, Duke of Burgundy.
She served as regent of Burgundy during the minority of her son in 1306 – 1311.
Henry, son of Robert I of Burgundy
Henry of Burgundy (c. 1035 – January 27, 1070/1074), called the Gallant ("le Damoiseau"), was the eldest surviving son and heir of Robert I, Duke of Burgundy, second son of Robert II of France, and his wife, Helie of Semur, granddaughter of Henry I, Duke of Burgundy.
Little is known about his life.
He died shortly before his father and was never duke himself.
The name of Henry's wife is not known, though both Sibylla and Clémence have been suggested.
The first of these derives from an undated obituary from Besançon, Sainte-Etienne, naming "Sibilla, mater ducus Burgundie" (Sibylla, mother of the Duke of Burgundy), it being reasoned that since she is not called duchess, she must have been married to the sole father of a duke who was not a duke himself, Henry.
However, it has been argued by Jean Richard that this is a reference to Sibylla of Burgundy, Duchess of Burgundy, mother of the then-ruling duke, Hugh II.
Richard proposed based on the name's repeated use among the descendants of her son Odo I, Duke of Burgundy that she may have been named Clémence, although Odo's wife had a sister, Clementia of Burgundy, who could have been the inspiration for its use among their descendants.
Based on the use of the byname "Borel" by Odo I, genealogist Szabolcs de Vajay proposed that his mother was the daughter of Berenguer Ramon I, Count of Barcelona and his third wife, Guisle of Lluca, and hence granddaughter of Ramon Borrell, Count of Barcelona, although there is no documentary evidence that this was the case.
Henry's wife died on or after July 6, 1074.
Anne of Burgundy
Anne of Burgundy, Duchess of Bedford( 30 September 1404 – 13 November 1432) was a daughter of John the Fearless, Duke of Burgundy( 1371 – 1419) and his wife Margaret of Bavaria( 1363 – 1423).
Florine of Burgundy
Florine of Burgundy( 1083–1097) was a French crusader.
She was the daughter of Eudes I, Duke of Burgundy and Sybilla of Burgundy.
Her maternal grandfather was William I, Count of Burgundy.
Florine was married to Sweyn the Crusader, a son of Sweyn II of Denmark.

Question: Who is Sibylla Of Burgundy, Duchess Of Burgundy's paternal grandmother?
Answer: Alice of Normandy