Gilbert Talbot, 3rd Baron Talbot
Gilbert Talbot, 3rd Baron Talbot( c. 1332–1387) was an English nobleman and soldier.
He was the grandfather of John Talbot, 1st Earl of Shrewsbury.
Isabella of Brittany
Isabella of Brittany( 1411 – c. 1444) was a daughter of John V, Duke of Brittany, and his wife, Joan of Valois.
Isabella was a member of the House of Dreux.
Bonne of Berry
Bonne of Berry( 1362/1365 – 30 December 1435) was the daughter of John, Duke of Berry, and Joanna of Armagnac.
Through her father, she was a granddaughter of John II of France.
John of Anjou
John (1354–1360) was a Hungarian royal prince of the Capetian House of Anjou.
He was the only son of Stephen of Anjou, Duke of Croatia, Dalmatia and Slavonia, and Margaret of Bavaria.
He inherited his father's duchies shortly after his birth.
He was regarded the heir to his childless uncle, Louis I of Hungary, who also secured John's right to inherit Poland from Casimir III of Poland.
Both Louis I and Casimir III survived John who died prematurely.
Stephen of Anjou
Stephen (20 August 1332 – 9 August 1354) was a Hungarian royal prince of the Capetian House of Anjou.
He was the youngest son of Charles I of Hungary and Elizabeth of Poland to survive childhood.
He was styled as duke of Slavonia from 1339 to 1346, but he had no role in the government of the province.
Stephen's separate household was set up in 1349.
In this year, he received the counties of Szepes and Sáros from his brother, Louis I of Hungary.
Louis made him duke of Transylvania in late 1349, but soon appointed him to administer Slavonia.
Stephen was regarded his childless brother's heir.
He and his mother governed the kingdom during Louis's first campaign of Naples in 1350.
Late in the same year, Stephen was again made duke of Transylvania, but from 1352 to 1353 he was styled duke of Szepes and Sáros.
Thereafter, he was entrusted with the administration of Croatia, Dalmatia and Slavonia.
He died on his return from a campaign against Serbia.
His infant son, John, inherited his duchy.
Charles, Duke of Durazzo
Charles of Durazzo( 1323 – 23 January 1348) was a Neapolitan nobleman, the eldest son of John, Duke of Durazzo and Agnes of Périgord.
Marie, Duchess of Auvergne
Marie of Berry( c. 1375 – June 1434) was" suo jure" Duchess of Auvergne and Countess of Montpensier in 1416- 1434.
She was the daughter of John, Duke of Berry, and Joanna of Armagnac.
She was married three times.
She acted as administrator of the Duchy of Bourbon for her third spouse John I, Duke of Bourbon, during his imprisonment in England after he was captured following the French defeat at the Battle of Agincourt in 1415, until 1434.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
John Christian Kunkel
John Christian Kunkel (September 18, 1816 – October 14, 1870) was a Whig and Republican member of the U.S. House of Representatives from Pennsylvania.
He was the grandfather of John Crain Kunkel.
Thomas Howard, 2nd Duke of Norfolk
Thomas Howard, 2nd Duke of Norfolk( 144321 May 1524), styled Earl of Surrey from 1483 to 1485 and again from 1489 to 1514, was an English nobleman and politician.
He was the eldest son of John Howard, 1st Duke of Norfolk, by his first wife, Catharina de Moleyns.
The Duke was the grandfather of both Queen Anne Boleyn and Queen Catherine Howard and the great grandfather of Queen Elizabeth I.
He served four monarchs as a soldier and statesman.

Question: Who is John Of Anjou's paternal grandfather?
Answer: Charles I of Hungary