Pronunciation: (mont'furt; Fr. môn-fôr'), [key]
1. Si•mon de Pronunciation: (sē-môn' du), [key] c1160–1218, French leader of the crusade against the Albigenses.
2. his sonSimon de, Earl of Leicester, 1208?–65, English soldier and statesman: leader of the Barons' War.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.