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. It was founded in 1063 by William the Conqueror and is one of the most important Romanesque buildings in Normandy.
Matthew, Count of Boulogne Matthew, Count of Boulogne, also known as "Matthew of Alsace" (  1137 –1173) was the second son of Thierry, Count of Flanders and Sibylla of Anjou. Matthew forcibly abducted the nun Marie de Boulogne, daughter of Stephen, King of England, and constrained her into marriage, claiming the title of Count of Boulogne "jure uxoris" in 1160. The forced marriage was opposed by the Church and finally annulled in 1170, but he continued to rule as Count until his death.