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.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
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.
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.
Robert II of France
Robert II (27 March 972 – 20 July 1031), called the Pious  or the Wise , was King of the Franks from 996 to 1031, the second from the House of Capet.
He was born in Orléans to Hugh Capet and Adelaide of Aquitaine.
Robert distinguished himself with an extraordinarily long reign for the time.
His 35-year-long reign was marked by his attempts to expand the royal domain by any means, especially by his long struggle to gain the Duchy of Burgundy.
His policies earned him many enemies, including three of his sons.
He was also known for his difficult marriages: he married three times, annulling two of these and attempting to annul the third, prevented only by the Pope's refusal to accept a third annulment.
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.
Margaret de Stafford
Margaret Stafford( born c. 1364; died 9 June 1396) was the daughter of Hugh de Stafford, 2nd Earl of Stafford, and Philippa de Beauchamp.
She was the first wife of Ralph Neville, 1st Earl of Westmorland, and the grandmother of the 2nd Earl.
Hugh Magnus
Hugh Magnus  (1007 – 17 September 1025)
was co-King of France under his father, Robert II, from 1017 until his death in 1025.
He was a member of the House of Capet, a son of Robert II by his third wife, Constance of Arles.
The first Capetian King of France, Hugh Capet, had ensured his family's succession to the throne by having his son, Robert II, crowned and accepted as King during his own lifetime; father and son had ruled together as King thenceforth until Hugh Capet's death.
Robert II, when his son was old enough, determined to do the same.
Hugh Magnus was thus crowned King of France on 9/19 June 1017, and thenceforth ruled beside his father.
However, when older, he rebelled against Robert.
Hugh died, perhaps of a fall from his horse, at Compiègne in 1025/1026 while preparing a rebellion against his father, aged around 18 years old.
Rodulfus Glaber was fulsome in his praise of the young king, writing: "My pen cannot express all of the great and good qualities that he showed...
in all things he was better than the best.
No elegy can ever equal his merits."
As a King of France, he would be numbered Hugh II; however, he is rarely referred to as such as he predeceased his father.
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Enguerrand I, Count of Ponthieu
Enguerrand I was the son of Hugh I of Ponthieu and Gisela, daughter of Hugh Capet.

Question: Who is Hugh Magnus's paternal grandmother?
Answer: Adelaide of Aquitaine