Question: Who is Henry De Beaumont, 5Th Earl Of Warwick's paternal grandmother?

Knowledge 1: Henry de Beaumont, 5th Earl of Warwick
Henry de Beaumont, 5th Earl of Warwick (c. 1192 – 10 October 1229), Earl of Warwick, and by marriage Lord of Hocknorton (Hook Norton) and Hedenton (Headington) in Oxfordshire, was the son of Waleran de Beaumont, 4th Earl of Warwick and Margaret.He was also known as Henry de Newburgh. [SEP] Knowledge 2: Waleran de Beaumont, 4th Earl of Warwick
Waleran de Beaumont, 4th Earl of Warwick (1153 – 12 December 1204) was the younger son of Roger de Beaumont, 2nd Earl of Warwick and Gundred de Warenne, daughter of William de Warenne, 2nd Earl of Surrey and Elizabeth de Vermandois.He was also known as Walerian de Newburg.After the death of his brother, William de Beaumont, 3rd Earl of Warwick, an impostor arose, claiming to be the deceased Earl; he gave Waleran a great deal of trouble in maintaining his claim.He does not appear to have been a great soldier, for he paid scutage money to escape military service in Wales.His position in the Court is attested by his bearing the right hand Sword of State at the Coronation of John, King of England, 27 May 1199.He liberally supported the hospital of St Michael's Hospital, Warwick and gave to the nuns of Pinley land at Claverdon, and land at Brailes to the nuns at Wroxall, Warwickshire.
Knowledge 1: Henry de Beaumont, 5th Earl of Warwick
Henry de Beaumont, 5th Earl of Warwick (c. 1192 – 10 October 1229), Earl of Warwick, and by marriage Lord of Hocknorton (Hook Norton) and Hedenton (Headington) in Oxfordshire, was the son of Waleran de Beaumont, 4th Earl of Warwick and Margaret.He was also known as Henry de Newburgh. [SEP] Knowledge 2: Thomas de Beaumont, 6th Earl of Warwick
Thomas de Beaumont, 6th Earl of Warwick( 1208 – 26 June 1242), Earl of Warwick, Baron of Hocknorton( Hook Norton) and Hedenton, was the son of Henry de Beaumont, 5th Earl of Warwick and Margaret D' Oili.He was also known as Thomas de Henry.Although he had attained his majority at the death of his father, he did not get full possession of the earldom until four years later, when he was girt with the Sword of Knighthood; this took place at Gloucester where the King was spending Whitsuntide.He inherited his uncle's( Henry D' Oili) Oxfordshire estate and owned the Manor of Bewdley, Worcester and rendered service for it, of a fully equipped archer for twenty days, as often as there was war against the Welsh.In 1241, he paid one hundred and eighty marks scutage in order that he might be excused attendance on Henry III of England in the expedition to Gascony.This was in excess of the sum due from him; the following year he paid a further one hundred and twenty marks.At the coronation of Eleanor of Provence, the Queen Consort of Henry III, on 26 June, 1236 he bore the third Sword of State, claiming that it was his hereditary right to do so.He married Ela Longespee, daughter of William Longespée, 3rd Earl of Salisbury, natural son to Henry II.Amongst Ela's benefactions were grants to the monks at Reading, Berkshire, the Canons of Osney, Oxfordshire, St Sepulchre's, Warwick, the grey friars in London, and the Nuns of Godstow, Oxford.In 1295, she gave land to the University of Oxford, from which a certain amount of the income was to be paid to the fellows of Merton College that they might perform masses for her soul.
Knowledge 1: William de Beaumont, 3rd Earl of Warwick
William de Beaumont, 3rd Earl of Warwick( before 1140 – 15 November 1184) was an English nobleman.He was married to Matilda de Percy( †c. 1204), daughter of William de Percy( † 1175) and his first wife Alice of Tonbridge( † 1148).He inherited the earldom from Roger de Beaumont, 2nd Earl of Warwick.On his father's death in 1153, William may have been a minor.William died, probably on Crusade, in 1184, and was succeeded by his brother Waleran de Beaumont, 4th Earl of Warwick. [SEP] Knowledge 2: Thomas de Beaumont, 6th Earl of Warwick
Thomas de Beaumont, 6th Earl of Warwick( 1208 – 26 June 1242), Earl of Warwick, Baron of Hocknorton( Hook Norton) and Hedenton, was the son of Henry de Beaumont, 5th Earl of Warwick and Margaret D' Oili.He was also known as Thomas de Henry.Although he had attained his majority at the death of his father, he did not get full possession of the earldom until four years later, when he was girt with the Sword of Knighthood; this took place at Gloucester where the King was spending Whitsuntide.He inherited his uncle's( Henry D' Oili) Oxfordshire estate and owned the Manor of Bewdley, Worcester and rendered service for it, of a fully equipped archer for twenty days, as often as there was war against the Welsh.In 1241, he paid one hundred and eighty marks scutage in order that he might be excused attendance on Henry III of England in the expedition to Gascony.This was in excess of the sum due from him; the following year he paid a further one hundred and twenty marks.At the coronation of Eleanor of Provence, the Queen Consort of Henry III, on 26 June, 1236 he bore the third Sword of State, claiming that it was his hereditary right to do so.He married Ela Longespee, daughter of William Longespée, 3rd Earl of Salisbury, natural son to Henry II.Amongst Ela's benefactions were grants to the monks at Reading, Berkshire, the Canons of Osney, Oxfordshire, St Sepulchre's, Warwick, the grey friars in London, and the Nuns of Godstow, Oxford.In 1295, she gave land to the University of Oxford, from which a certain amount of the income was to be paid to the fellows of Merton College that they might perform masses for her soul.

Answer: Gundred de Warenne