| Male Jean I d'Avêsnes, Seigneur d'Avesnes |
| Birth | 1 May 1218 | Étrœungt, Nord, Hauts-de-France, France |
| Death | 24 Dec 1257 | |
| Burial | Aft 24 Dec 1257 | Valenciennes, Nord, Hauts-de-France, France |
| Marriage | 9 Oct 1246 [1, 2, 3] | |
| Father | Sir Bouchard d'Avêsnes, Seigneur d'Avêsnes and d'Etroen | F3348 Group Sheet | |
| Mother | Margaret, Countess of Hainault and Flanders | F3348 Group Sheet | |
| Female Adelaide of Holland |
| Birth | About 1225 | |
| Death | 1284 | |
| Burial | ||
| Father | Florenz IV, Count of Holland | F3537 Group Sheet | |
| Mother | Matilda of Brabant, Countess of Holland | F3537 Group Sheet | |
| Male + Jean II d'Avêsnes, Count of Hainault and Holland |
| Birth | 1247 | Brabant, Holland |
| Death | 22 Aug 1304 | |
| Burial | ||
| Spouse | Philippa of Luxemburg | F6157 | |
| Marriage | 1270 | |
| Notes |
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Sources 🟢 Primary Evidence 🟡 Secondary Evidence 🟠 Tertiary Evidence 🔴 Unreliable Evidence |
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