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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Marianna Lubomirska
Princess Marianna Lubomirska (1693–1729) was a Polish noblewoman magnate.
She was heiress of large Ostróg estates.
Daughter of Grand Marshal of the Crown Józef Karol Lubomirski, the son of Voivode of Kraków Aleksander Michał Lubomirski and Princess Helena Tekla Ossolińska and Princes Teofila Ludwika Zasławska, the daughter of Prince Władysław Dominik Zasławski and Katarzyna Sobieska (sister of King of Poland Jan III Sobieski).
Janusz Aleksander Sanguszko
Janusz Aleksander Sanguszko (5 May 1712, Lubartów – 14 September 1775, Dubno) was a magnate in the Polish-Lithuanian Commonwealth.
He held the titles of miecznik and Court Marshal of Lithuania.
He was not interested in politics, and spent most of his life using the fortunes previous members of the Sanguszko family gathered, spending it on his lavish lifestyle.
Indebted, in 1753 he agreed to divide the "ordynacja ostrogoska" he inherited from his mother, Marianna Lubomirska, among the members and allies of the "familia".
This decision, known as the "transakcja kolbuszowska", was opposed by the enemy of "familia", hetman Jan Klemens Branicki, and was finally accepted by the decision of Sejm (national parliament) in 1766.
He married Konstancja Sanguszko in 1731 but separated after the wedding.
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.
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.
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.
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.

Question: Who is the maternal grandmother of Janusz Aleksander Sanguszko?
Answer: Teofila Ludwika Zasławska