The Abbey of Saint-Étienne was founded by a descendant of who?
William the Conqueror William I (c. 1028 – 9 September 1087), usually known as William the Conqueror and sometimes William the Bastard, was the first Norman King of England, reigning from 1066 until his death in 1087. A descendant of Rollo, he was Duke of Normandy (as Duke William II) from 1035 onward. After a long struggle to establish his power, by 1060 his hold on Normandy was secure, and he launched the Norman conquest of England six years later. The rest of his life was marked by struggles to consolidate his hold over England and his continental lands and by difficulties with his eldest son.
William de Chesney William de Chesney (flourished 1142–1161) was an Anglo-Norman magnate during the reign of King Stephen of England (reigned 1135–1154) and King Henry II of England (reigned 1154–1189). Chesney was part of a large family; one of his brothers became Bishop of Lincoln and another Abbot of Evesham Abbey. Stephen may have named him Sheriff of Oxfordshire. Besides his administrative offices, Chesney controlled a number of royal castles, and served Stephen during some of the king's English military campaigns. Chesney's heir was his niece, Matilda, who married Henry fitzGerold.