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.
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.
Humphrey Sibthorp (1744–1815)
Humphrey Sibthorp (3 October 1744 – 25 April 1815) was a British Tory politician who sat in the House of Commons in two periods between 1777 and 1806.
Sibthorp was the eldest surviving son of the botanist Humphry Sibthorp and his first wife Sarah Waldo, daughter of Isaac Waldo of Streatham, Surrey.
He was educated at Harrow School in 1755 and Westminster School in 1756.
In 1758 he matriculated at Corpus Christi, Oxford on 24 May and was awarded BA in 1762 and MA in 1766.
He entered Lincoln's Inn in 1766 and was called to the bar in 1770.
At the 1774 general election, Sibthorp stood for Parliament at Lincoln and Newark, and was bottom of the poll in both constituencies.
He was elected as a Member of Parliament (MP) for Boston at a by-election on 3 May 1777, after the death of Charles Amcotts MP.
He was re-elected in 1780, but was defeated at the 1784 general election.
Sibthorp was elected as a Member of Parliament (MP) for Lincoln at a by-election on 9 April 1800, after the death of George Rawdon MP.
He was re-elected in 1802, but declined to stand 1806 general election, because of ill-health.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Humphry Sibthorp (botanist)
Humphry Waldo Sibthorp (1713–1797) was a British botanist.
He was a younger son of John Sibthorpe, MP for Lincoln and Mary Browne, daughter of Humphrey Browne of Lincoln.
After the death of Johann Jacob Dillenius (1684–1747), he became the Sherardian Professor of Botany at the University of Oxford from 1747 to 1783.
He is known for having taught one course for 37 years.
He began the catalogue of the plants of the botanical garden of the university, "Catalogus Plantarum Horti Botanici Oxoniensis".
The genus "Sibthorpia", in the plantain family of plants is named after him.
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.
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.
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.

Question: Who is Humphrey Sibthorp (1744–1815)'s paternal grandmother?
Answer: Mary Browne