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.
John I, Duke of Cleves
John I, Duke of Cleves, Count of Mark( 16 February 1419 – 5 September 1481) was Duke of Cleves and Count of Mark.
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.
John, Duke of Randazzo
John, Duke of Randazzo (1317–1348) was duke of Randazzo, Athens, and Neopatria, Count of Malta and regent of Sicily (1342–1348).
The fourth son of Frederick III of Sicily and Eleanor of Anjou, he was the most powerful nobleman in Sicily during the reigns of his brother Peter and his nephew Louis, during whose minority he was regent.
He kept the peace during regency, though he supported the Catalan party over the local Italian nobility.
Thus he appointed Blasco II de Alagona, a Catalan, as his successor.
War broke out upon his death during the Plague.
He married Cesarea, daughter of Peter Count of Castalnasetta and had three recorded children:
Frederick I who succeeded him as Duke of Athens and Neopatria; and two daughters Eleanor and Constance.
He died of the Black Plague in 1348 and was buried next to his father and nephew in the cathedral of Catania.
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.
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.
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.
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.
John Westley
Rev. John Westley( 1636 – 78) was an English nonconformist minister.
He was the grandfather of John Wesley( founder of Methodism).
Frederick III of Sicily
Frederick II (or III) (13 December 1272 – 25 June 1337) was the regent (from 1291) and subsequent King of Sicily from 1295 until his death.
He was the third son of Peter III of Aragon and served in the War of the Sicilian Vespers on behalf of his father and brothers, Alfonso ΙΙΙ and James ΙΙ.
He was confirmed as King of Trinacria (another name for the island of Sicily) by the Peace of Caltabellotta in 1302.
His reign saw important constitutional reforms: the "Constitutiones regalesCapitula alia", and "Ordinationes generales".

Question: Who is John, Duke Of Randazzo's paternal grandfather?
Answer: Peter III of Aragon