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.
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.
Gülbahar Hatun (wife of Mehmed II)
Gülbahar Hatun( 1432 – 1492) was the consort of Sultan Mehmed II, and mother of Sultan Bayezid II of the Ottoman Empire and the grandmother of Selim I.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Odo, Count of Penthièvre
Odo of Rennes (Medieval Breton: "Eudon Pentevr", Modern Breton: "Eozen Penteur", Latin: "
Eudo", French: "Eudes/Éon de Penthièvre")
(999–1079), Count of Penthièvre, was the youngest of the three sons of Duke Geoffrey I of Brittany and Hawise of Normandy, daughter of Richard I of Normandy.
Eozen married Agnes of Cornouaille (Orguen Kernev), the daughter of Alan Canhiart, Count of Cornouaille and sister of Hoel II, Duke of Brittany who was married in 1066 to Eozen's niece Hawise, Duchess of Brittany.
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.
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.
Alan the Black
Alan the Black (died 1098) was the second lord of the Honour of Richmond from 1093 until his death.
He was a younger son of Odo, Count of Penthièvre.
He succeeded his elder brother, Alan Rufus ("Alan the Red"), at Richmond.
There is no record of him being in England prior to 1093.
Alan either had an affair with, or was married to, the nun Gunnhild of Wilton Abbey, a daughter of King Harold II.
Gunnhild had earlier eloped with his elder brother.
There is contemporary documentation that after the death of Alan Rufus in 1093, Gunnhild lived with Alan the Black.
Before this, there is no record of Alan having any wife; there is no record of children.
He was succeeded at Richmond by another brother, Stephen, Count of Tréguier.
Hüma Hatun
Hüma Hatun (1410 ‒ September 1449) was the fourth wife of Ottoman Sultan Murad II and mother of Mehmed II and the grandmother of Bayezid II.

Question: Who is Alan The Black's paternal grandmother?
Answer: Hawise of Normandy