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.
John Abercromby, 5th Baron Abercromby
John Abercromby, 5th Baron Abercromby (15 January 1841 – 7 October 1924) was a Scottish soldier and archaeologist.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Éléonore Desmier d'Olbreuse
Éléonore Marie Desmier d'Olbreuse (3 January 1639 – 5 February 1722) was the wife of George William, Duke of Lauenburg and Prince of Celle.
She was the mother of Sophia Dorothea of Celle, who was the wife of George I of Great Britain.
Thus she is the maternal grandmother of George II.
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.
George Boyle, 6th Earl of Glasgow
George Frederick Boyle, 6th Earl of Glasgow( 9 October 1825 – 23 April 1890) was a Scottish nobleman.
He was the son of George Boyle, 4th Earl of Glasgow and Julia Sinclair, daughter of Sir John Sinclair, 1st Baronet.
In February 1847, Boyle traveled with Frederick Hamilton- Temple- Blackwood, 1st Marquess of Dufferin and Ava to Skibbereen in County Cork to try and aid victims of the Irish Famine.
Lord Dufferin left a memoir of their journey entitled" Narrative of a Journey from Oxford to Skibbereen during the Year of the Irish Famine" published in 1847.
He married Hon. Montague Abercromby( 1835 – 1931), daughter of George Abercromby, 3rd Baron Abercromby and Louisa Penuel Forbes, on 29 April 1856.
They had two daughters
He was elected at a by-election in February 1865 as the Member of Parliament( MP) for Buteshire, but held the seat only until the general election in July 1865.
He succeeded to his half brother's titles on 11 March 1869.
He held the offices of Deputy Lieutenant of Fife and Renfrewshire.
He held the office of Lord Clerk Register of Scotland from 1879 until his death.
He died at age 64, without male issue.
On his death, the UK barony of Ross of Hawkhead became extinct.
George Abercromby, 2nd Baron Abercromby
George Abercromby, 2nd Baron Abercromby (14 October 1770 – 15 February 1843) was a Scottish lawyer, politician and peer.
The eldest son of Lt.-Gen.
Sir Ralph Abercromby and Mary Abercromby, 1st Baroness Abercromby
, he became, like his grandfather, a lawyer, and was called to the Bar in 1794.
On his death in 1843 he was succeeded in the barony by his son.
George Abercromby, 3rd Baron Abercromby
George Ralph Campbell Abercromby, 3rd Baron Abercromby (30 May 1800 – 25 June 1852) was a Scottish soldier, politician and peer.
The son of George Abercromby, 2nd Baron Abercromby and Hon.
Montague Dundas, on his death in 1852 he was succeeded in the barony by his eldest son.
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.
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.

Question: Who is George Abercromby, 3Rd Baron Abercromby's paternal grandmother?
Answer: Mary Abercromby, 1st Baroness Abercromby