| Male Count of Flanders Matthew |
| Birth | ||
| Death | 1173 | |
| Burial | ||
| Marriage | 1160 | |
| Type | Annulled | |
| Father | Count of Flanders Thierry, III | F1626 Group Sheet | |
| Mother | Sibilla Plantagenet | F1626 Group Sheet | |
| Female Countess of Mortaigne Mary |
| Birth | 1136 | |
| Death | 1182 | St. Austrebert, Montreuil, France |
| Burial | ||
| Father | King of England Stephen | F1702 Group Sheet | |
| Mother | Queen of England Matilda | F1702 Group Sheet | |
| Female + Matilda, of Boulogne |
| Birth | 1162 | |
| Death | 1211 | |
| Burial | ||
| Spouse | Duke of Brabant Henry, I | F1701 | |
| Marriage | 1179 | |