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.
Louisa Cavendish-Bentinck
Caroline Louisa Cavendish- Bentinck( née Burnaby; 5 December 1832 – 6 July 1918) was the maternal grandmother of Queen Elizabeth The Queen Mother and the great- grandmother of Elizabeth II.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
Vere Essex Cromwell, 4th Earl of Ardglass
Vere Essex Cromwell, 4th Earl of Ardglass PC (I), (2 October 1625 – 26 November 1687) was an English nobleman, son of Thomas Cromwell, 1st Earl of Ardglass and Elizabeth Meverell.
Elizabeth Southwell
Elizabeth Southwell (née Cromwell), called Lady Cromwell (1674–1709) was an English noblewoman, the only daughter of Vere Essex Cromwell, 4th Earl of Ardglass and wife Catherine Hamilton.

Question: Who is Elizabeth Southwell's paternal grandmother?
Answer: Elizabeth Meverell