Isabella of Aragon, Countess of Urgell
Isabella of Aragon( 1376, Barcelona – 1424) was a daughter of Peter IV of Aragon and his fourth wife, Sibila of Fortia.
She was infanta of Aragon and Countess of Urgel.
James II of Aragon
James II (10 April 1267 – 2 or 5 November 1327), called the Just, was the King of Aragon and Valencia and Count of Barcelona from 1291 to 1327.
He was also the King of Sicily (as James I) from 1285 to 1295 and the King of Majorca from 1291 to 1298.
From 1297 he was nominally the King of Sardinia and Corsica, but he only acquired the island of Sardinia by conquest in 1324.
His full title for the last three decades of his reign was "James, by the grace of God, king of Aragon, Valencia, Sardinia and Corsica, and count of Barcelona"
(Latin: "Iacobus Dei gracia rex Aragonum, Valencie, Sardinie, et Corsice
ac comes Barchinone").
Born at Valencia, James was the second son of Peter III of Aragon and Constance of Sicily.
He succeeded his father in Sicily in 1285 and his elder brother Alfonso III in Aragon and the other Spanish territories, including Majorca, in 1291.
He was forced to cede Sicily to the papacy in 1295, after which it was seized by his younger brother, Frederick III, in 1296.
In 1298 he returned Majorca to the deposed king of Majorca, a different James II, having received rights to Sardinia and Corsica from Pope Boniface VIII.
On 20 January 1296, Boniface issued the bull "Redemptor mundi" granting James the titles of Standard-bearer, Captain General and Admiral of the Roman church.
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.
Isabella of Aragon, Queen of Germany
Isabella of Aragon (1305 – 12 July 1330) was the daughter of James II of Aragon and his second wife Blanche of Anjou.
Queen consort of Frederick I of Austria.
She was a member of the House of Aragon
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.
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.
Isabella of France, Dauphine of Viennois
" For other persons named Isabella of France, see Isabella of France( disambiguation)" Isabella of France and Burgundy( 1310 – April 1348) was the daughter of Philip V of France and Joan II, Countess of Burgundy.
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.
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 Isabella Of Aragon, Queen Of Germany's paternal grandmother?
Answer: Constance of Sicily