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.
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.
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.
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.
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.
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.
Princess Tenagnework
Princess Tenagnework Haile Selassie, baptismal name
Fikirte Mariam (12 January 1912 – 6 April 2003), of Ethiopia was the eldest child of Emperor Haile Selassie and Empress Menen Asfaw.
Hirut Desta
Princess Hirut Desta (also Princess Ruth Desta) was the daughter of "Ras" Desta Damtew and Princess Tenagnework Haile Selassie, and granddaughter of Emperor Haile Selassie of Ethiopia.
She was the widow of General Nega Tegegn, who was governor of the provinces of Begemder and Semien.
She was described by Nathaniel T. Kenney as a "trim, most democratic of princesses," who "was not above grabbing a tool from a workman, I suspect, and showing him how to use it."
Princess Hirut was educated at the School of St Clare (renamed Bolitho School), Penzance, Cornwall, and Clarendon School, Abergele, North Wales.
She was imprisoned by the Dergue from 1974 until 1988.
Princess Hirut Desta died in London aged 84 in 2014, and her funeral was conducted at the Holy Trinity Cathedral in Addis Ababa.

Question: Who is Hirut Desta's maternal grandmother?