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.
Purnima (Hindi actress)
Purnima Das Verma( born Meherbhano Mohammad Ali) was an Indian film actress who worked predominantly in Hindi language films.
She is the grandmother of actor Emraan Hashmi.
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.
John Osborne, 11th Duke of Leeds
John Francis Godolphin Osborne, 11th Duke of Leeds (12 March 1901 – 26 July 1963) was a British peer.
He was the son of George Godolphin Osborne, 10th Duke of Leeds and Lady Katherine Frances Lambton.
He succeeded to the title of 11th Duke of Leeds and its subsidiary titles on 10 May 1927.
He inherited half a million pounds after tax from his father at the age of twenty-six in 1927, but his father also left gambling debts.
Hornby Castle estate was placed on the market in 1930 and the Duke spent the rest of his life as a tax exile on the French Riviera, and on the island of Jersey at his mansion Melbourne House.
Hornby Castle, bar one gutted wing, was demolished in 1931.
Bibulous and self-centred, he had no interest in living up to his title, and dissipated much of the family's remaining wealth, although enough remained for his sole child Lady Camilla to inherit, in addition to an allowance, £1,000,000
lump sum from the family trust in 1971.
In 1965 he sold a Goya portrait of the Duke of Wellington at auction for £140,000 .
It was subsequently stolen from the National Gallery in a famous theft.
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.
Lady Camilla Osborne
Lady Camilla
Dorothy Godolphin Osborne (formerly Harris and Dempster; born 14 August 1950) is an English heiress.
She is the only child of John Osborne, 11th Duke of Leeds.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
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.

Question: Who is the paternal grandmother of Lady Camilla Osborne?
Answer: Lady Katherine Frances Lambton