William of Breteuil was

Benedictine , image = Medalla San Benito.PNG , caption = Design on the obverse side of the Saint Benedict Medal , abbreviation = OSB , formation = , motto = (English: 'Pray and Work') , foun ...

abbot of Breteuil, near Beauvais,

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...

. He rebuilt the monastery after it had been nearly destroyed by the

Normans The Normans ( Norman: ''Normaunds''; french: Normands; la, Nortmanni/Normanni) were a population arising in the medieval Duchy of Normandy from the intermingling between Norse Viking settlers and indigenous West Franks and Gallo-Romans. ...

. He was the eldest son of

William FitzOsbern, 1st Earl of Hereford William FitzOsbern, 1st Earl of Hereford, Lord of Breteuil ( 1011 – 22 February 1071), was a relative and close counsellor of William the Conqueror and one of the great magnates of early Norman England. FitzOsbern was created Earl of Hereford ...

. He was held captive and tortured by Ascelin Gouel, Sire d' Yvry, until he finally granted his daughter Isabella de Breteuil's hand in marriage to him.

Francis Palgrave Sir Francis Palgrave, (; born Francis Ephraim Cohen, July 1788 – 6 July 1861) was an English archivist and historian. He was Deputy Keeper (chief executive) of the Public Record Office from its foundation in 1838 until his death; and he is ...

, ''The History of Normandy and of England...'' !V:398ff.

Issue

Both of William's children were illegitimate # Eustace de Breteuil, married Juliane FitzRoy # Isabel de Breteuil, married Ascelin Gouel d'Yvry

Notes

French Roman Catholic saints 12th-century Christian saints 1130 deaths French Benedictines Year of birth unknown {{Saint-stub