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.
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.
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.
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.
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.
Joan de Geneville, 2nd Baroness Geneville
Joan de Geneville, 2nd Baroness Geneville, Countess of March, Baroness Mortimer (2 February 1286 – 19 October 1356), also known as Jeanne de Joinville, was the daughter of Sir Piers de Geneville and Joan of Lusignan.
She inherited the estates of her grandparents, Geoffrey de Geneville, 1st Baron Geneville, and Maud de Lacy, Baroness Geneville.
She was one of the wealthiest heiresses in the Welsh Marches and County Meath, Ireland.
She was the wife of Roger Mortimer, 1st Earl of March, the de facto ruler of England from 1327 to 1330.
She succeeded as suo jure 2nd Baroness Geneville on 21 October 1314 upon the death of her grandfather, Geoffrey de Geneville.
As a result of her husband's insurrection against King Edward II of England, she was imprisoned in Skipton Castle for two years.
Following the execution of her husband in 1330 for usurping power in England, Joan was once more taken into custody.
In 1336, her lands were restored to her after she received a full pardon for her late husband's crimes from Edward II's son and successor, Edward III of England.
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.
Edmund Mortimer (died 1331)
Sir Edmund Mortimer (1302/1303 – 16 December 1331) was the eldest son of Roger Mortimer, 1st Earl of March and Joan de Geneville, 2nd Baroness Geneville.
By his wife Elizabeth de Badlesmere he was the father of Roger Mortimer, 2nd Earl of March.
Though Edmund survived his father by one year, he did not inherit his father's lands and titles as they were forfeited to the Crown and his son only reacquired them gradually.
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.

Question: Who is the maternal grandmother of Edmund Mortimer (Died 1331)?
Answer: Joan of Lusignan