Question: Who is Richard De Montfort's paternal grandfather?

Knowledge 1: Richard de Montfort
Richard de Montfort (Montfort l'Amaury, Ile de France, France – 1092), was the son of Simon I de Montfort, Count of Évreux (c. 1025–1087) and Agnès d'Évreux (c. 1030 – c. 1087), daughter of Richard, Count of Évreux.He succeeded his half brother Amaury II in 1089 as lord of Montfort-l'Amaury.In November 1092, he was killed in battle.Orderic Vitalis records that he succeeded his half-brother in 1089 and "was relentless in his attempts to take vengeance on William of Breteuil for Amaury's fate".He was mortally wounded in an attack on Conches, during the war between Raoul III de Tosny and William, Count of Évreux triggered by the enmity between their wives.He died without an heir and left Montfort to his brother, Simon II.He was buried in Épernon, Eure-et-Loir, France. [SEP] Knowledge 2: Simon I de Montfort
Simon I de Montfort (c. 1025 – 25 September 1087) was a French nobleman.He was born in Montfort l'Amaury, in the Duchy of Normandy, and became its lord.He was the son of Amaury I de Montfort and Bertrade.At his death he was buried about away in Epernon, because it was the site of the fortress he was instrumental in constructing.
Knowledge 1: Richard de Montfort
Richard de Montfort (Montfort l'Amaury, Ile de France, France – 1092), was the son of Simon I de Montfort, Count of Évreux (c. 1025–1087) and Agnès d'Évreux (c. 1030 – c. 1087), daughter of Richard, Count of Évreux.He succeeded his half brother Amaury II in 1089 as lord of Montfort-l'Amaury.In November 1092, he was killed in battle.Orderic Vitalis records that he succeeded his half-brother in 1089 and "was relentless in his attempts to take vengeance on William of Breteuil for Amaury's fate".He was mortally wounded in an attack on Conches, during the war between Raoul III de Tosny and William, Count of Évreux triggered by the enmity between their wives.He died without an heir and left Montfort to his brother, Simon II.He was buried in Épernon, Eure-et-Loir, France. [SEP] Knowledge 2: Simon II de Montfort
Simon II de Montfort( Montfort l' Amaury, Ile de France, France – 25 September 1104) was the son of Simon I de Montfort( c. 1025 – 1087) and Agnès d' Évreux( c. 1030 – c. 1087).He succeeded his brother Richard de Montfort in 1092 as lord of Montfort- l' Amaury.In 1098, he had to sustain a siege led by William II Rufus, King of England and guardian of Normandy in the absence of Robert Curthose, gone to crusade, and Simon successfully fought it off.He died without an heir and left Montfort to his brother, Amaury III.
Knowledge 1: Richard de Montfort
Richard de Montfort (Montfort l'Amaury, Ile de France, France – 1092), was the son of Simon I de Montfort, Count of Évreux (c. 1025–1087) and Agnès d'Évreux (c. 1030 – c. 1087), daughter of Richard, Count of Évreux.He succeeded his half brother Amaury II in 1089 as lord of Montfort-l'Amaury.In November 1092, he was killed in battle.Orderic Vitalis records that he succeeded his half-brother in 1089 and "was relentless in his attempts to take vengeance on William of Breteuil for Amaury's fate".He was mortally wounded in an attack on Conches, during the war between Raoul III de Tosny and William, Count of Évreux triggered by the enmity between their wives.He died without an heir and left Montfort to his brother, Simon II.He was buried in Épernon, Eure-et-Loir, France. [SEP] Knowledge 2: Amaury de Montfort (died 1241)
Amaury de Montfort( 1192 – 1241) was the son of Simon de Montfort, 5th Earl of Leicester and Alix de Montmorency, and the brother of Simon de Montfort, 6th Earl of Leicester.

Answer: Amaury I de Montfort