| Male Earl of Cornwall William De Mortaigne |
| Birth | 1060 | |
| Death | 1140 | |
| Burial | ||
| Marriage | ||
| Father | Count Robert De Mortaigne | F2214 Group Sheet | |
| Mother | Maude Montgomery | F2214 Group Sheet | |
| Male + Aldhelm De Mortaigne |
| Birth | 1085 | , Cornwall, England, United Kingdom |
| Death | Yes, date unknown | |
| Burial | ||
| Spouse | Agnes | F3046 | |
| Marriage | ||