Breteuil, also known as Breteuil-sur-Iton ("Breteuil-on-Iton"), is a commune in the Eure department in Normandy in northern France. On 1 January 2016, the former communes Cintray and La Guéroulde were merged into Breteuil.

History

During the Middle Ages, Breteuil was the seat of a lordship in the duchy of Normandy. Its lord William FitzOsbern was a companion of William during his conquest of England in 1066. His son William of Breteuil served as a Benedictine abbot before inheriting Breteuil and was later canonized as a saint by the Roman Catholic Church. His illegitimate son Eustace of Breteuil married Juliane de Fontevrault, the illegitimate daughter of King Henry I of England, who feuded with her father and eventually lost control of the lordship.

Population