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.
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.
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.
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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
Matteo I Visconti
Matteo I Visconti (1250–1322) was the second of the Milanese Visconti family to govern Milan.
Matteo was born to Teobaldo Visconti and Anastasia Pirovano.
In 1287, Matteo's uncle Ottone Visconti, the first lord of Milan, nominated him as "capitano del popolo" of Milan.
Following his uncle's death in 1295, he succeeded him as lord of Milan.
Matteo was appointed numerous times as Imperial Vicar over the whole of Lombardy, while expanding, with the assistance of his sons, his sphere of influence to Piedmont, Emilia, Bologna, and Genoa.
Caught between the Papal and Imperial power struggle over northern Italy, Matteo would renounce his imperial title for "General Lord of the Milanese People".
Found guilty on the charge of necromancy, excommunicated, and facing a crusade, Matteo resigned his position and died months later.
He was succeeded by his son Galeazzo I.
Stefano Visconti
Stefano Visconti (c.1287-4 July 1327) was a member of the House of Visconti that ruled Milan from the 14th to the 15th century.
He was the son of Matteo I Visconti.
In 1318 he married Valentina Doria, daughter of Bernabò Doria from Sassello and of Eliena Fieschi, with whom he had three children: Matteo II, Galeazzo II and Bernabò, who shared the rule in Milan after his death.
Stefano died in the night of July 4, 1327, after a banquet he gave Louis the Bavarian, shortly after he was crowned King of Italy.
His contemporaries linked his death to an attempted poisoning of the King, leading to the imprisonment of three of Stefanos' four brothers, Galeazzo, Giovanni, and Luchino, as well as of his nephew, the future Lord of Milan, Azzo Visconti, in the fortress of Monza: This event marked a crisis of the relations between the Holy Roman Empire and the Visconti.
The magnificent tomb of Stefano and his wife Valentina, carved in 1359 by Bonino da Campione, is located in the Basilica Sant'Eustorgio in Milan.

Question: Who is Stefano Visconti's paternal grandmother?
Answer: Anastasia Pirovano