Everard I of Breteuil
Everard I of Breteuil (died 12 February 1066), son of Hilduin, Count of Breteuil and Viscount of Chatres, and his wife Emmeline. Everard was the patriarch of the Le Puiset family which produced a large number of participants in the First Crusade. The Le Puisets were closed aligned with the family of Montlhéry through the marriage of his third son Hugh to the daughter of Guy I of Montlhéry.
- Everard II of Breteuil (d. after 1105), Count of Breteuil, Viscount of Chartres. Married Adelais de la Ferté-Baudouin.
- Adelaide de Breteuil (d. 1073 or after)
- Waleran I of Breteuil (d. after 25 February 1084)
- Hugh I of Le Puiset (d. 23 December 1096 or after), Châtelain of Puiset, Viscount of Chartres. Married Alice of Montlhéry, daughter of Guy I of Montlhéry and Hodierna of Gometz.
- Robert of Breteuil (d. 5 November 1077), Abbot of Breteuil
- Adelaide of Breteuil, married, as his second wife, Roger of Montgomerie, 1st Earl of Shrewsbury
- Eremburge, married Rivallon II, Seigneur de Dol.
Everard’s descendants would comprise a family, particularly the descendants of Hugh, that was known for its savagery during the Crusades, as reported by Abbot Suger of St. Denis. Everard’s eldest son and namesake, as head of the family, did not take the cross, instead giving up his lands and possessions, entering the abbey of Marmoutier. See also the Houses of Montlhéry and Le Puiset.
- La Monte January 1942, p. 100-101.
- Riley-Smith, Jonathan (1997). The First Crusaders, 1095-1131. Cambridge University Press. p. 42.
- La Monte, John L. (January 1942). "The Lords of Le Puiset on the Crusades". Speculum.
- Riley-Smith, Jonathan, The First Crusaders, 1095-1131, Cambridge University Press, London, 1997