Bertrade de Montfort (died 1117) was the daughter of Simon de Montfort-l'Amaury and Agnes, Countess of Evreux. Her brother was Amaury III de Montfort. Events May 3 - Merton Priory (Thomas Becket school) consecrated. ... Évreux is a commune of Normandy, France, in the Eure département, of which it is the préfecture (capital). ...

In 1089 she married Count Fulk IV of Anjou, and they became the parents of a son, but Bertrade left Fulk and took up with King Philippe. Philippe married her on May 15, 1092, despite the fact that they both had spouses living. He was so enamoured of Bertrade that he refused to leave her even when threatened with excommunication. Pope Urban II did excommunicate him in 1095, and Philip was prevented from taking part in the First Crusade. Astonishingly, Bertrade persuaded Philippe and Fulk to be friends. Events Northumbria divided by the Normans into the counties of Northumberland, County Durham, Yorkshire, Westmorland and Lancashire August 11, powerful Britain Coronation of Rama Varma Kulasekhara in Kerala Synod of Melfi under Pope Urban II imposes slavery on the wives of priests Palmyra destroyed by earthquake Byzantine conquest of Crete... Fulk IV of Anjou (1043-1109), also known as Fulk le Réchin, was count of Anjou from 1068 to 1109. ... Philip I (French: Philippe Ier) (May 23, 1052 - July 29, 1108) was King of France. ... May 15 is the 135th day of the year in the Gregorian Calendar (136th in leap years). ... Events May 9 - Lincoln Cathedral is consecrated. ... Excommunication is a religious censure which is used to deprive or suspend membership in a religious community. ... Urban II, né Otho of Lagery (or Otto or Odo) (1042 - July 29, 1099), pope from 1088 to July 29, 1099, was born into nobility in France at Lagery (near Châtillon-sur-Marne) and was church educated. ... Events The county of Portugal is established for the second time. ... The First Crusade was launched in 1095 by Pope Urban II to regain control of the sacred city of Jerusalem and the Christian Holy Land from Muslims. ...

Bertrade and Philippe had four children together:

1. Philippe de France, Count of Mantes (c. 1093 [?]-1123)
2. Fleury de France, Lord of Nangis (1095 [?]-1118)
3. Cécile (1097-1145), married (1) Tancred, Prince of Galilee; married (2) Pons of Tripoli
4. Eustachie (c. 1095-?), married Jean, Count of Etampes

According to Orderic Vitalis, Bertrade was anxious that one of her sons succeed Philippe, and sent a letter to King Henry I of England asking him to arrest her stepson Louis. Orderic also claims she sought to kill Louis first through the arts of sorcery, and then through poison. Whatever the truth of these allegations, Louis succeeded Philippe in 1108. Bertrade lived on until 1117; William of Malmesbury says: "Bertrade, still young and beautiful, took the veil in the abbey of Fontrevault, always charming to men, pleasing to God, and like an angel.". Her son from her first marriage was Fulk V of Anjou. Tancred (1072 - 1112) was a leader of the First Crusade, and later became regent of the Principality of Antioch and Prince of Galilee. ... Pons of Tripoli (c. ... Orderic Vitalis (1075 – c. ... Henry I of England, depicted in Cassells History of England, Century Edition, published circa 1902 Henry I (c. ... Louis VI the Fat (French: Louis VI le Gros) (December 1, 1081 – August 1, 1137) was king of France from 1108 to 1137. ... William of Malmesbury (c. ... Fulk of Anjou, king of Jerusalem (1092-1143), was the son of Fulk IV, count of Anjou, and his wife Bertrada (who ultimately deserted her husband and became the mistress of Philip I of France). ...

Sources

• Orderic Vitalis
• William of Malmesbury