Question: Who is the paternal grandmother of Edward Despenser, 1St Baron Despenser?

Knowledge 1: Edward Despenser, 1st Baron Despenser
Edward le Despenser, 1st Baron Despenser (24 March 1336, Essendine – 11 November 1375) was the son of another Edward le Despenser and Anne Ferrers, sister of Henry, Lord Ferrers of Groby.He succeeded as Lord of Glamorgan in 1349.Le Despencer went with Edward the Black Prince to France, and was present at the Battle of Poitiers.In recognition of his conduct in the French wars, he was summoned to Parliament as a baron in 1357.At the same time, he also became a Knight of the Garter.He was a friend and patron of Jean Froissart and the eldest brother of Henry le Despenser, Bishop of Norwich.There is a statue of him on the top of the Holy Trinity Chantry Chapel in Tewkesbury Abbey, renowned as the "KNEELING KNIGHT". [SEP] Knowledge 2: Edward Despenser (died 1342)
Edward le Despenser (died 1342) was a son of Hugh le Despenser the Younger by his wife Eleanor de Clare.His father, a favourite of Edward II of England, was executed in 1326.Through his mother, he was a great-grandson of EdwardI of England.
Knowledge 1: Edward Despenser, 1st Baron Despenser
Edward le Despenser, 1st Baron Despenser (24 March 1336, Essendine – 11 November 1375) was the son of another Edward le Despenser and Anne Ferrers, sister of Henry, Lord Ferrers of Groby.He succeeded as Lord of Glamorgan in 1349.Le Despencer went with Edward the Black Prince to France, and was present at the Battle of Poitiers.In recognition of his conduct in the French wars, he was summoned to Parliament as a baron in 1357.At the same time, he also became a Knight of the Garter.He was a friend and patron of Jean Froissart and the eldest brother of Henry le Despenser, Bishop of Norwich.There is a statue of him on the top of the Holy Trinity Chantry Chapel in Tewkesbury Abbey, renowned as the "KNEELING KNIGHT". [SEP] Knowledge 2: Hugh Despenser (justiciar)
Hugh le Despencer, 1st Baron le Despencer( 1223 – 4 August 1265) was an important ally of Simon de Montfort during the reign of Henry III.He served briefly as" Justiciar" of England in 1260 and as Constable of the Tower of London.Hugh Le Despenser, chief justiciar of England, first played an important part in 1258, when he was prominent on the baronial side in the Mad Parliament of Oxford.In 1260 the barons chose him to succeed Hugh Bigod as Justiciar, and in 1263 the king was further compelled to put the Tower of London in his hands.He was the son of Hugh le Despenser and was summoned to Parliament by Simon de Montfort.Hugh was summoned as Lord Despencer Dec. 14, 1264 and was Chief Justiciar of England and a leader of the baronial party, and so might be deemed a baron, though the legality of that assembly is doubtful.He remained allied with Montfort to the end, and was present at the Battle of Lewes.He was killed fighting on de Montfort's side at the Battle of Evesham in August, 1265.He was slain by Roger Mortimer, 1st Baron Wigmore; this caused a feud to begin between the Despencer and the Mortimer families.By his wife, Aline Bassett, he was father of Hugh Despenser' the elder', Earl of Winchester.Aline was the daughter of Philip Basset, who had also served as Justiciar.They also had a daughter named Eleanor le Despencer, who married Sir Hugh de Courtenay, feudal baron of Okehampton.
Knowledge 1: Edward Despenser, 1st Baron Despenser
Edward le Despenser, 1st Baron Despenser (24 March 1336, Essendine – 11 November 1375) was the son of another Edward le Despenser and Anne Ferrers, sister of Henry, Lord Ferrers of Groby.He succeeded as Lord of Glamorgan in 1349.Le Despencer went with Edward the Black Prince to France, and was present at the Battle of Poitiers.In recognition of his conduct in the French wars, he was summoned to Parliament as a baron in 1357.At the same time, he also became a Knight of the Garter.He was a friend and patron of Jean Froissart and the eldest brother of Henry le Despenser, Bishop of Norwich.There is a statue of him on the top of the Holy Trinity Chantry Chapel in Tewkesbury Abbey, renowned as the "KNEELING KNIGHT". [SEP] Knowledge 2: Robert de Ferrers, 4th Baron Ferrers of Chartley
Robert de Ferrers, 4th Baron Ferrers of Chartley( 1358 – 1413) was the son of John de Ferrers, 3rd Baron Ferrers of Chartley and Elizabeth de Stafford, a daughter of Ralph de Stafford, 1st Earl of Stafford and Margaret de Audley.He inherited the title of Baron Ferrers of Chartley upon his father's death at the Battle of Nájera on 3 April 1367 but was never summoned to parliament.Robert married Margaret Le Despenser( born around 1360) a daughter of Edward le Despencer, 1st Baron le Despencer, KG, and Lady Elizabeth Burghersh.The couple had one son Edmund, who became Edmund de Ferrers, 5th Baron Ferrers of Chartley upon the death of his father around 1412, and one daughter Philippe, who married Sir Thomas Greene, Sheriff of Northamptonshire( 10 February 1399 – 18 January 1462), by whom she was the grandmother of Sir Thomas Green.Philippe and Sir Thomas are ancestors to Queen consort Catherine Parr, the last wife of King Henry VIII.Robert de Ferrers, 4th Baron Ferrers of Chartley died sometime around 1413 and is buried at Merevale Abbey in Warwickshire.

Answer: Eleanor de Clare