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.
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.
Julia Minor (sister of Caesar)
Julia, also known as Julia Minor and Julia the Younger, (101–51 BC) was the second of two daughters of Gaius Julius Caesar and Aurelia Cotta.
She was the sister of the dictator Gaius Julius Caesar, and the maternal grandmother of Augustus.
Atia (mother of Augustus)
Atia Balba Caesonia (also "Atia Balba")
(85 BC – 43 BC) was the niece of Gaius Julius Caesar through his sister Julia Minor, mother of Gaius Octavian, who became the Emperor Augustus, step-grandmother of the Emperor Tiberius, great-grandmother of the Emperor Claudius, great-great grandmother of the Emperor Caligula and Empress Agrippina the Younger, and great-great-great-grandmother of the Emperor Nero.
The name Atia Balba was also borne by the other two daughters of Julia and her husband praetor Marcus Atius Balbus.
They were Atia's older sister Atia Balba Prima, and her younger sister was Atia Balba Tertia.
As a result, she was sometimes referred to as Atia Balba Secunda to differentiate her from her two sisters.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
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.
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.
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.

Question: Who is the maternal grandmother of Atia (Mother Of Augustus)?