Mortimer
Mortimer is an English surname.
The origin of the name is thought to be Norman,
One version is that it derives from "Mortemer", site of the Cistercian Abbaye de Mortemer at Lisors near Lyons-la-Forêt and close to Rouen in Normandy. The land was granted to the Cistercians by Henry II in the 1180s. Finding the land to be a marsh land area of the Lyons Forest around the running Fouillebroc Stream, the monks dug out a large drainage lake and built the Abbaye de Mortemer. The ruins and lake can still be visited, and the later 16th century Abbey hosts tours.