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.
Anna of Brunswick-Grubenhagen-Einbeck
Anna of Brunswick-Grubenhagen-Einbeck (1414 – 4 April 1474) was a daughter of Duke Eric I of Brunswick-Grubenhagen and his wife, Elisabeth of Brunswick-Göttingen.
Anna's first marriage was with Duke Albert III of Bavaria.
They had the following children:
After Albert's death, she married Duke Frederick III of Brunswick-Calenberg-Göttingen.
This marriage remained childless.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Margaret Paleologa
Margaret Palaeologa( 11 August 1510 in Casale Monferrato – 28 December 1566 in Mantua), was an Italian ruler; ruling Marchioness of Montferrat in 1533- 1536.
She was also Duchess of Mantua by marriage to Federico II, Duke of Mantua.
Margaret was the regent of Mantua as the guardian of her two sons from 1540 until 1556 in companionship with her brother- in- law.
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.
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.
Margaret of Bavaria, Marchioness of Mantua
Margaret of Bavaria (1442–1479), was a Marchioness consort of Mantua, married in 1463 to Federico I Gonzaga, Marquess of Mantua.
She was the daughter of Albert III, Duke of Bavaria and Anna of Brunswick-Grubenhagen-Einbeck.
The marriage between Margaret and Frederico helped trading relations between the two states.
Margaret was hunch-backed and was not able to speak or read Italian when she arrived, but the relationship with Frederico was described as happy.
The court was dominated by her mother-in-law, but Margaret avoided all conflicts.
During his war against Aragon, Frederico appointed Margaret as regent in his absence during the spring and summer of 1479.
She died during her reign.
Margaret of Bavaria, Electress Palatine
Margaret of Bavaria (7 November 1456 – 25 January 1501) was a princess of Bavaria-Landshut and by marriage Princess of the Palatinate.
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.
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 Margaret Of Bavaria, Marchioness Of Mantua's maternal grandmother?
Answer: Elisabeth of Brunswick-Göttingen