Simon I de Montfort ( 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 Épernon, because it was the site of the fortress he was instrumental in constructing. Progeny Simon I first married Isabel de Broyes (b. 1034 in Broyes, Marne), daughter of Hugh Bardoul. Their children were: Amaury II de Montfort (c. 1056 – 1089), lord of Montfort Isabel (Elizabeth) de Montfort (b. 1057), who married Raoul II de Tosny, a companion of William the Conqueror. Simon I's second marriage was to Agnes d'Evreux (b. 1030), daughter of Richard, Count of Évreux. Their children were: Bertrade de Montfort (c. 1059 – 1117), became queen of France. Richard de Montfort (c. 1066 – 1092), lord of Montfort, slain in attack on abbey at Conches. Simon II de Montfort (c. 1068 – 1104), lord of Montfort Amaury III de Montfort (c. 1070 – 1137), lord of Montfort and Count of Évreux. Guillaume de Montfort (c. 1073–1101), bishop of Paris. Adeliza de Montfort (b. 1075) References Sources Simon Seigneur of Montfort 1020s births 1087 deaths Year of birth uncertain