Michael Addison, 3rd Viscount Addison
Michael Addison, 3rd Viscount Addison (12 April 1914 – 23 March 1992), was a British civil servant and academic.
Addison was the second son of Christopher Addison, 1st Viscount Addison, and his first wife, Isobel Mackinnon Gray.
His father, a physician and politician, was created a viscount in 1945.
He was educated at Hele's School, Exeter, and Balliol College, Oxford.
He was in the Civil Service between 1936 and 1965.
He served as an intelligence officer in the Second World War between 1941 and 1945 as a Flying Officer with the Royal Air Force Volunteer Reserve.
He was a senior lecturer between 1965 and 1976 in the Polytechnic of Central London, School of Management Studies, London.
He succeeded in the viscountcy on the death of his brother, who died with no male heir in 1976.
Lord Addison married Kathleen Wand, daughter of the Right Reverend
Sir William Wand, on 22 August 1936, with whom he had the following children:
He died in 1992 and was succeeded by his only son.
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.
William Addison, 4th Viscount Addison
William Matthew Wand Addison, 4th Viscount Addison (born 13 June 1945), is a British peer.
The son of Michael Addison, 3rd Viscount Addison, he succeeded the Viscountcy on the death of his father in 1992.
He was educated at Westminster School and King's School, Bruton.
In the House of Lords, Viscount Addison had sat as a Conservative peer until the House of Lords Act 1999 removed his automatic right to sit in the House.
He stood for election as an elected hereditary peer (and therefore possessing the right to continue to sit).
However, he finished 47th amongst the Conservative peers (a total of 42 Conservative peers were elected).
He has stood in subsequent by-elections for election to the House, but to date has been unsuccessful.
On 10 October 1970, he married Joanna Mary Dickinson, with whom he had the following children:
In 1991, he married Lesley Ann Mawer.
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.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
Christopher Addison, 2nd Viscount Addison
Christopher Addison, 2nd Viscount Addison (8 December 1904 – 18 November 1976), was a British peer.
The son of Christopher Addison, 1st Viscount Addison, he succeeded the viscountcy on the death of his father in 1951.
Lord Addison married Brigit Helen Christine Williams (d. 1980), on 10 September 1928, with whom he had the following children:
As he left no male heir, he was succeeded by his brother Michael.
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 William Addison, 4Th Viscount Addison?
Answer: Isobel Mackinnon Gray