Jean De Flandres Seigneur de Crèvecoeur
| Father | Guillaume IV De Flandres Seigneur de Crèvecoeur |
| Mother | Alix De Clermont Vicomtesse de Châteaudun |
| Birth* | Jean De Flandres Seigneur de Crèvecoeur was born at France. |
| He was the son of Guillaume IV De Flandres Seigneur de Crèvecoeur and Alix De Clermont Vicomtesse de Châteaudun. | |
| Marriage* | Jean De Flandres Seigneur de Crèvecoeur married Béatrice De Châtillon, daughter of Guy III De Châtillon Comte de St Paul and Marie de Bretagne, on 15 June 1315 at France. |
| Death* | Jean De Flandres Seigneur de Crèvecoeur died on 2 May 1325 at France; war wounds. |
| Occupation* | He was employed Seigneur de Crèvecoeur, d'Alleux, de Neele, de Châteaudun, de Montdoubleau, and de Tenremonde, Châtelain de Cambrai. |
Family | Béatrice De Châtillon |
| Child |