The Abbey of Saint-Étienne was founded by a descendant of who?
Abbey of Saint-Étienne, Caen: The Abbey of Saint-Étienne, also known as Abbaye aux Hommes ("Men's Abbey") by contrast with the Abbaye aux Dames ("Ladies' Abbey"), is a former Benedictine monastery in the French city of Caen, Normandy, dedicated to Saint Stephen. 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. William the Conqueror:  A descendant of Rollo, he was Duke of Normandy (as Duke William II) from 1035 onward.
i don't know