
| Name | Williamde MORTAGNE | |
| Suffix | Count of Mortain | |
| Birth | Abt 1068 | Mortain, Normandy, France |
| Gender | Male | |
| Death | Yes, date unknown | |
| Person ID | I26767 | Coombs |
| Last Modified | 9 Jan 2021 | |
| Father | Robert de MORTAGNE, Count of Mortain, 2nd Earl of Cornwall, b. Abt 1031, Mortagne-sur-Sèvre, Pays de la Loire, France d. 8 Dec 1090, Grestain, Fatouville-Grestain, Haute-Normandie, France (Age 59 years) | |
| Mother | Matilda de MONTGOMERY, Abbess of Almenchêches, b. Abt 1039, Mortagne, Orne, Basse-Normandie, France d. 12 Sep 1082, Abbey of St. Grestain, Normandie, France (Age 43 years) | |
| Family ID | F9312 | Group Sheet | Family Chart |