| Father | Stephen Blois (1096 - 1154) |
| Mother | Matilda Of Boulogne (1105 - 1152) |
| Sibling | Hamelin Plantagenet (1134 - 1202) |
| Sibling | Matilda Of Beaumont (1104 - ) |
| Sibling | Matilda (1133 - 1135) |
| Sibling | Eustace (1131 - 1153) |
| Sibling | Baldwin De Blois (1133 - 1135) |
| Sibling | Count Eustace IV of Boulogne (1135 - 1153) |
| Sibling | William Count of Boulogne (1128 - 1159) |
| Sibling | Baldwin (1126 - ) |
| Sibling | Matilda Of England (1133 - ) |
| Sibling | Marie De Boulogne (1131 - 1182) |
| Sibling | Eustace (1130 - 1153) |
| Sibling | Eustace Boulogne IV (1129 - 1153) |
| Sibling | Mary (1136 - 1182) |
| Sibling | Marie De Boulogne (1136 - 1182) |
| Sibling | Baldwin De Blois (1127 - 1128) |
| Sibling | Guillaume (William) Count Of Mortain & Boulogne (1139 - ) |
| Sibling | William Deblois (1134 - 1159) |
| Sibling | Eustace IV De Blois (1129 - 1153) |
| Sibling | William England (1137 - ) |
| Sibling | Guillaume De Blois Earl of Warenne & Surrey (1139 - ) |