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.
Emma of Blois
Emma of Blois( 950–27 December 1003) was Duchess consort of Aquitaine by marriage to William IV, Duke of Aquitaine.
She ruled Aquitaine as regent for her son, William V, Duke of Aquitaine, from 996 until 1004.
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.
Gerloc
Gerloc (or Geirlaug), baptised in Rouen as Adela (or Adèle) in 912, was the daughter of Rollo, of Normandy, Count of Rouen, and his wife, Poppa of Bayeux.
She was the sister of William I Longsword of Normandy.
In 935, she married William Towhead, the future Count of Poitou and Duke of Aquitaine.
They had two children together before she died on 14 October 962:
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.
Adelaide of Aquitaine
Adbelahide or Adele or Adelaide of Aquitaine (or Adelaide of Poitiers)
(c. 945 or 952 – 1004), was queen consort of France by marriage to Hugh Capet.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
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.

Question: Who is the maternal grandmother of Adelaide Of Aquitaine?
Answer: Poppa of Bayeux