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.
Joanna of Aragon, Queen of Naples
Joanna of Aragon (16 June 1455 – 9 January 1517) was Queen of Naples as the second wife of King Ferdinand I.
Born in Barcelona, Joanna was the second child of John II of Aragon by his second wife, Juana Enríquez, and his youngest legitimate child.
Reforce d'Agoult
Reforce d' Agoult was the Angevin seneschal of medieval Lombardy, under the reign of Joanna I of Naples.
Killed in battle at Gamenario, he was replaced by Roberto di Luinardo.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
John II of Aragon
John II (Catalan: "Joan II", Aragonese: "Chuan II" and), called the Great ("el Gran") or the Faithless ("el Sense Fe")
(29 June 1398 – 20 January 1479), was the King of Navarre through his wife ("jure uxoris") from 1425 and the King of Aragon in his own right from 1458 until his death.
He was the son of Ferdinand I and his wife Eleanor of Alburquerque.
John was also King of Sicily from 1458-1468.
María de Salinas
María de Salinas, Baroness Willoughby de Eresby( ca. 1490 – 1539) was a noblewoman from Spain.
She served as confidante and lady- in- waiting to Catherine of Aragon, Queen of England.
Otto, Duke of Brunswick-Grubenhagen
Otto, Duke of Brunswick- Grubenhagen( 1320 – 1 December 1398) was the fourth and last husband of Joanna I of Naples.
He also held the title of Prince of Taranto.
His nickname was Otto the Tarantine.
Andrew, Duke of Calabria
Andrew, Duke of Calabria( 30 October 1327 – 18 September 1345) was the first husband of Joanna I of Naples, and a son of Charles I of Hungary and brother of Louis I of Hungary.
Joanna of Naples (1478–1518)
Joanna of Naples( 15 April 1479 – 27 August 1518) was the Queen consort of Naples by marriage to Ferdinand II of Naples.
After the death of her spouse, she was for a short while considered as his successor.
Joanna of Aragon, Countess of Ampurias
Joanna of Aragon( Barcelona 7 November 1344- Castellón, Ampurias 1385) was the second child of Peter IV of Aragon and his first wife Maria of Navarre.
She was an Infanta of Aragon by birth and Countess of Ampurias by her marriage.
She was a member of the House of Aragon.

Question: Who is Joanna Of Aragon, Queen Of Naples's paternal grandmother?
Answer: Eleanor of Alburquerque