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.
John of Hesse-Braubach
John of Hesse-Braubach (17 June 1609, Darmstadt - 1 April 1651, Ems) was a German nobleman and general.
He was the Landgrave of Hesse-Braubach.
His parents were Louis V, Landgrave of Hesse-Darmstadt and Magdalene of Brandenburg.
He was married on 30 September 1647 to Johannetta of Sayn-Wittgenstein, the daughter of Ernest, Count of Sayn-Wittgenstein-Sayn and Louise Juliane of Erbach.
The marriage was childless.
Johannetta later married Johann Georg I, Duke of Saxe-Eisenach.
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.
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.
Johannetta of Sayn-Wittgenstein (1632–1701)
Johannetta of Sayn- Wittgenstein( 27 August 1632 – 28 September 1701), was Sovereign Countess of Sayn- Wittgenstein- Sayn- Altenkirchen from 1648 to 1701.
She was also Landgravine of Hesse- Braubach by marriage to John, Landgrave of Hesse- Braubach, and Duchess of Saxe- Marksuhl( later Saxe- Eisenach) by marriage to John George I, Duke of Saxe- Eisenach.
Magdalene of Brandenburg
Magdalene of Brandenburg, also Magdalene and Magdalen, (7 January 1582 – 4 May 1616) was the daughter of John George, Elector of Brandenburg and his third wife Elisabeth of Anhalt-Zerbst.
She married Louis V, Landgrave of Hesse-Darmstadt.
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.
Blanche of Lancaster
Blanche of Lancaster (25 March 1342 – 12 September 1368) was a member of the English royal House of Plantagenet and the daughter of the kingdom's wealthiest and most powerful peer, Henry of Grosmont, 1st Duke of Lancaster.
She was the first wife of John of Gaunt, the mother of King Henry IV, and the grandmother of King Henry V of England.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.

Question: Who is John Of Hesse-Braubach's maternal grandmother?
Answer: Elisabeth of Anhalt