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. Abbey of Saint-Étienne, Caen:  It was founded in 1063 by William the Conqueror and is one of the most important Romanesque buildings in Normandy. William the Conqueror:  A descendant of Rollo, he was Duke of Normandy (as Duke William II) from 1035 onward.
i don't know