Adela of Normandy
Adela of Normandy, of Blois, or of England (c. 1067 – 8 March 1137), also known as in Roman Catholicism, was a daughter of William the Conqueror and Matilda of Flanders who later became the Countess of Blois, Chartres, and Meaux by marriage to Stephen II, Count of Blois.
Her husband greatly benefited from the increased social status and prestige that came with such a marriage.
She brought with her not only her bloodline, but a wedding gift of money and other movable goods from the prodigious store of Anglo-Norman wealth.
She was regent of Blois during the absence of her spouse in 1096–1100 and 1101–02, and during the minority of her son from 1102 until 1120.
Adela was the mother of Stephen, King of England and Henry of Blois, Bishop of Winchester.
The couple had ten children, though it is not certain if all were Adela's biological children.
It is only certain that she had five sons and might have had three or more daughters.
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.
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.
William, Count of Sully
William the Simple (– c. 1150) was Count of Blois and Count of Chartres from 1102 to 1107, and jure uxoris Count of Sully.
William was the eldest son of Stephen-Henry, Count of Blois and Adela of Normandy, daughter of William the Conqueror.
He was the older brother of Theobald II, Count of Champagne, King Stephen of England and Henry, Bishop of Winchester.
In the absence of male issue to Henry I, William was the eldest legitimate grandson of William the Conqueror.
He would thus have been the principal rival to Henry's daughter Matilda to inherit the throne after Henry's death.
However, he was not considered as a candidate for the English crown.
Several historians have taken the view that he was passed over because of mental deficiency; hence his soubriquet "William the Simple".
Though widely argued, this has never been clearly substantiated.
William was at first groomed to inherit the comital thrones of Blois and Chartres, and was designated count shortly before his father's departure on his second crusade in 1102.
However he was soon removed from wide-ranging comital duties by his mother, because of his erratic behaviour.
He once assaulted and threatened to kill the Bishop of Chartres over a jurisdictional dispute.
So, when her second son Theobald came of age, around 1107, Adela elevated him to the position of count of Blois-Chartres, and forced William to retire to his wife's lands in Sully.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Mary of Avesnes
Marie of Hainaut( 1280–1354) was the daughter of John II, Count of Holland and Philippa of Luxembourg, her brother was William I, Count of Hainaut.
Elisabeth of Nassau-Dillenburg
Countess Elisabeth of Nassau- Dillenburg( born 25 September 1542 in Dillenburg – died: 18 November 1603 in Dillenburg) was a daughter of William I, Count of Nassau- Dillenburg and Juliana of Stolberg and was one of the sisters of William the Silent.
Adolf of Nassau (1540–1568)
Adolf of Nassau (Dillenburg, 11 July 1540 – Heiligerlee, 23 May 1568) was a count of Nassau, also known as Adolphus of Nassau.
He was the fourth son and sixth child of William I, Count of Nassau-Dillenburg and Juliana of Stolberg.
He was the second youngest brother of William the Silent.
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.

Question: Who is the maternal grandmother of William, Count Of Sully?
Answer: Matilda of Flanders