Sancto Leodegario
He was probably related to the Vicomte de Chartres. He fought at the Battle of Hastings. He also owned lands near to Avranches.
He was already a large landowner in Sussex, England before the Norman Conquest, and is also thought to be of the family of Robert, Count of Eu, in France. St. Leger family derive their French tithes.
He was thought to be, with the de Clare family, descended from Robert, 1st Duke of Normandy. He was Master of the Chase. He was with William the Conqueror at Seige of Exeter 1068.
He was Brompton Regis and Lord of St Leger en Yvelines-Rambouillet des Aubees.
Robertus de Vilapari 
