 However, after the Battle of Mortemer of 1054, Roger lost the land and was banned from Normandy for his failure to capture an enemy of the Duke William.Decades later, the property was granted back to the Mortemer family, namely by Ranulph, who acquired it.They were related to William de Warenne, 1st Earl of Surrey, and descendants of a sister of Gunnor, the wife of Richard I of Normandy.