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.
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.
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.
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.
Sirivannavari
Princess Sirivannavari Nariratana Rajakanya (born 8 January 1987) is a Princess of the Kingdom of Thailand and is the only daughter of King Vajiralongkorn and his former consort Sujarinee Vivacharawongse (commonly known as Yuvadhida Polpraserth) in the line of succession and to bear royal titles.
She has produced works as a fashion designer, and competed in sports as an equestrian and former badminton player.
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.
Vajiralongkorn
Vajiralongkorn (RTGS: Wachiralongkon), reigning title Phrabat Somdet Phra Vajira Klao Chao Yu Hua (born 28 July 1952), is King of Thailand since 2016.
He is the only son of King Bhumibol Adulyadej and Queen Sirikit.
In 1972, at the age of 20, he was made crown prince by his father.
After his father's death on 13 October 2016, he was expected to accede to the throne of Thailand but asked for time to mourn before taking the throne.
He accepted the throne on the night of 1 December 2016.
His father was cremated on 26 October 2017.
His coronation took place from 4–6 May 2019.
The Thai government retroactively declared his reign to have begun on 13 October 2016, upon his father's death.
As the tenth monarch of the Chakri dynasty, he is also styled as Rama X. Aged 64 at that time, Vajiralongkorn became the oldest Thai monarch to ascend to the throne.
In 2019, his net worth was estimated around .
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 Sirivannavari's paternal grandmother?
Answer: Sirikit