Remarks:
Seigneur of Montfort. The family took its name from Amaury, or Amalric, the builder of the castle there, whose father had been invested with the lordship by Hugh Capet. Simon in 1058 attested a charter of Henry I. About 1063 he took a leading part in persuading duke William to recall Ralph de Toeni and Hugh de Grandmesnil from exile.