| Source: | Medieval Lands - version 4 |
| Item of interest: | Brittany Nobility - Cornouaille, Penthievre |
| Date accessed: | |
| Citation: | |
| Certainty: | probably |
| Notes: |
| 31 | Olivier de Blois-Châtillon (-28 September 1433), Comte de Penthièvre, parents: Jean I de Blois-Châtillon and Marguerite de Clisson |
| 32 | Robert de Dinan (-13 March 1429), Seigneur de Châteaubriand |