
| Yolande de DREUX, of Bretagne | |
| B: | Abt 1218 |
| Bretagne, Normandy, France | |
| D: | 1272 |
| Hugh XI de LUSIGNAN, Count of Mar & Angoulême | |
| B: | Abt 1221 |
| Angoulême, Poitou-Charentes, France | |
| D: | 6 Apr 1250 |
| John de DREUX, Duke of Brittany | |
| B: | Abt 1220 |
| Bretagne, Normandy, France | |
| D: | 1286 |
| Alice de THOUARS | |
| B: | 1201 |
| Thouars, Poitou-Charentes, France | |
| D: | 1221 |
| Pierre Mauclerc de DREUX, Duke of Brittany | |
| B: | Abt 1187 |
| Braine, Aisne, Picardy, France | |
| D: | 26 May 1250 |
| Katherine de THOUARS | |
| B: | 1201 |
| Thouars, Poitou-Charentes, France | |
| D: | Yes, date unknown |
| Constance, Duchess of Brittany | |
| B: | Abt 1161 |
| Brittany, France | |
| D: | 5 Sep 1201 |
| Nantes, Brittany, France | |
| Guy, Viscount De Thouars | |
| B: | Abt 1155 |
| Thouars, Poitou-Charentes, France | |
| M: | 1199 |
| Angiers, Anjou, France | |
| D: | 1213 |
| Chemillé, Maine, France | |
|
| Conan IV, Count of Bretagne | |
| B: | Abt 1130 |
| Brittany, France | |
| D: | 20 Feb 1170–1171 |
| Margaret, Duchess of Brittany | |
| B: | 1154 |
| Northumberland, Northumberland, England | |
| M: | 1159 OR 1160 |
| Of, , , Scotland | |
| D: | 1201 |
| Sawtrey Abbey, Cambridgeshire, England | |