He was born in
Montfort l'Amaury,
Ile de France, 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. ==References==