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.
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.
Hüma Hatun
Hüma Hatun (1410 ‒ September 1449) was the fourth wife of Ottoman Sultan Murad II and mother of Mehmed II and the grandmother of Bayezid II.
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.
Cunigunda of France
Cunigunda (c. 893 – aft. 923) was the daughter of Ermentrude of France, daughter in turn of Louis the Stammerer, king of the Franks.
The identity of her father is unknown.
In 898 her uncle Charles III gained control as king of the Franks, changing Cunigunda's life for the better.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Gülbahar Hatun (wife of Mehmed II)
Gülbahar Hatun( 1432 – 1492) was the consort of Sultan Mehmed II, and mother of Sultan Bayezid II of the Ottoman Empire and the grandmother of Selim I.
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.
Ermentrude, daughter of Louis the Stammerer
Ermentrude (French: "Ermentrude de France"; 875/78–?) was a Princess of France in the Middle Ages, named after her grandmother, Queen Ermentrude of Orléans.
Ermentrude was a daughter of King Louis the Stammerer and his first wife, Ansgarde of Burgundy, whom he married in 862 with official sanction.
Despite having several children together (2 sons, Louis and Carloman and 3 daughters, Giselle, Hildegarde and Ermentrude) with Ansgarde of Burgundy, her father had the marriage annulled, prior to his marriage with Adelaide of Paris in 875.
After the death of Louis, the struggle for power in the kingdom probably led to Ermentrude’s marriage to Evrard de Sulichgau, son of Unroch III of Friuli.
Ermentrude’s daughter, Cunigunda, first in 909 married Wigeric of Lotharingia, count of Bidgau and count palatine of Lotharingia, then in 922 married Ricwin, Count of Verdun (d. 923).
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 the maternal grandmother of Cunigunda Of France?
Answer: Ansgarde of Burgundy