Golo Mann
Golo Mann (27 March 1909 – 7 April 1994), born Angelus Gottfried Thomas Mann, was a German popular historian, essayist and writer.
He was the third child of the novelist Thomas Mann and his wife Katia Mann.
Golo Mann, originally a Bavarian German, held Czechoslovakian citizenship from 1936 on, American 1943–68, Swiss from 1968 on and additionally German since 1976.
Katia Mann
Katia Mann (born Katharina Hedwig Pringsheim; July 24, 1883 – April 25, 1980) was the youngest child and only daughter (among four sons) of the German Jewish mathematician and artist Alfred Pringsheim and his wife Hedwig Pringsheim, who was an actress in Berlin before her marriage.
Katia was also a granddaughter of the writer and women's rights activist Hedwig Dohm.
Her twin brother Klaus Pringsheim was a conductor, composer, music writer and music pedagogue, active in Germany and Japan.
She married the writer Thomas Mann.
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.
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.
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.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.

Question: Who is the maternal grandmother of Golo Mann?
Answer: Hedwig Pringsheim