Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
William Cadogan (childcare writer)
William Cadogan( 1711 – 26 February 1797) was an 18th- century British physician and writer on child care and nursing.
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.
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.
George Cadogan, 3rd Earl Cadogan
Admiral George Cadogan, 3rd Earl Cadogan, CB, KMT (5 May 1783 – 15 September 1864) was a British Royal Navy officer and politician of the mid-nineteenth century who first gained fame for his service in the Adriatic campaign of the Napoleonic Wars in command of .
Cadogan later served as aide-de-camp to successive British monarchs and received promotion to full admiral.
The son of Charles Cadogan, 3rd Baron Cadogan and his second wife Mary Churchill, Cadogan inherited his father's titles from his half brother Charles in 1832 and became the third Earl Cadogan.
He was also created 1st Baron Oakley of Caversham on 10 September 1831.
Later in life, Cadogan was elected to become a Fellow of the Society of Antiquaries of London and died in 1864.
Frederick William Cadogan
Frederick William Cadogan DL, JP (16 December 1821 – 30 November 1904), styled The Honourable from 1831, was a British barrister and Liberal politician.
He was the fourth son of George Cadogan, 3rd Earl Cadogan and his wife Honoria Louisa Blake, daughter of Joseph Blake and sister of Joseph Blake, 1st Baron Wallscourt.
Cadogan was educated at Westminster School and then at Oriel College, Oxford.
He was called to the bar by the Inner Temple in 1847 and practised in the Northern Circuit.
Having unsuccessfully stood for Bridgnorth in 1852 and for Stafford five years later, Cadogan entered the British House of Commons in 1868, sitting as Member of Parliament (MP) for Cricklade until 1874.
He was a Deputy Lieutenant for Middlesex and represented the same county as well as Westminster as a Justice of the Peace.
On 29 November 1851, Cadogan married Lady Adelaide Paget, eight daughter of Henry Paget, 1st Marquess of Anglesey.
They had three daughters and a son.
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.
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 the paternal grandmother of Frederick William Cadogan?
Answer: Mary Churchill