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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
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.
Henry Boyle Bernard
The Honourable Henry Boyle Bernard (6 February 1812 – 14 March 1895) was an Irish Conservative Party politician from County Cork who sat in the House of Commons from 1863 to 1868.
Bernard was the third son of James Bernard, 2nd Earl of Bandon (1785–1856) and his wife Mary Susan Albinia Brodrick.
Bernard was elected at a by-election in February 1863 as the Member of Parliament (MP) for Bandon,
filling the vacancy caused by the death of his uncle William Smyth Bernard (a son of the 1st Earl of Bandon).
He was re-elected in 1865, but at the 1868 general election he was defeated by the Liberal candidate William Shaw.
James Bernard, 2nd Earl of Bandon
James Bernard, 2nd Earl of Bandon (14 June 1785 – 31 October 1856) was an Irish Conservative politician who sat in the House of Commons in three periods between 1806 and 1831 and in the House of Lords as a representative peer from 1835 until his death.
Bernard was the son of Francis Bernard, 1st Earl of Bandon and his wife Lady Catherine Henrietta Boyle, daughter of Richard Boyle, 2nd Earl of Shannon.
He was educated at St John’s College, Cambridge.
Bernard died at Castle Bernard the age of 71.
Bernard married Mary Susan Albinia Brodrick, daughter of Rev. the Hon.
Charles Brodrick, Archbishop of Cashel, at St. John's Cathedral, Cashel on 13 March 1809.
He was succeeded by his son Francis.
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.
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.

Question: Who is the paternal grandmother of Henry Boyle Bernard?
Answer: Lady Catherine Henrietta Boyle