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.
Joseph Pease, 3rd Baron Gainford
Joseph Edward Pease, 3rd Baron Gainford (25 December 1921 – 4 April 2013) was a British hereditary peer and a member of the Pease family.
He was the eldest son of Joseph Pease, 2nd Baron Gainford and his wife Veronica Margaret Noble.
He was educated at Eton College, Gordonstoun and the Open University.
He married 1953, Margaret Theophila Radcliffe Tyndale, (born 1925)
daughter of Henry Edmund Guise Tyndale, M.B.E. by Ruth Isabel Walcott Radcliffe.
The couple had two daughters, Hon.
Joanna Ruth Miriam Pease (born 1959) and Hon.
Virginia Claire Margaret Pease (born 1960).
He succeeded to the title on his father's death in 1971.
Sir Richard Pease, 3rd Baronet
Sir Richard Thorn Pease, 3rd Baronet DL( born 20 May 1922) is a British former banker, who was chairman of Yorkshire Bank, and vice- chairman of Barclays.
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.
Joseph Pease, 2nd Baron Gainford
Joseph Pease, 2nd Baron Gainford (1889–1971) was a British hereditary peer and a member of the Pease family.
He was the only son of the Liberal peer Joseph Albert Pease, 1st Baron Gainford and his wife Ethel Havelock-Allan, a daughter of Sir Henry Marshman Havelock-Allan, Bt..
He married 1921, Veronica Margaret Noble, (died 1995) daughter of Sir George John William Noble, 2nd Baronet.
Children were:
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
Diana Guardato
Diana Guardato was a member of the aristocratic Patrician Guardato family, and had three children with King Ferdinand I: Diana Guardato is the 16th- Great Grandmother of His Royal Highness Albert II of Belgium, 15th- Great Grandmother of His Majesty Juan Carlos
I of Spain, 17th- Great Grandmother of Philippe of Belgium, 14th- Great Grandmother of His Majesty Manuel II of Portugal, 16th- Great Grandmother of Grand Duke Henri, as well as many others.

Question: Who is Joseph Pease, 3Rd Baron Gainford's paternal grandmother?
Answer: Ethel Havelock-Allan