| Margaret, Countess of Hainault and Flanders | |
| B: | 2 Jun 1202 |
| Constantinople (now Istanbul), Empire of the East | |
| D: | 10 Feb 1280 |
| Jean II d'Avêsnes, Count of Hainault and Holland | |
| B: | 1247 |
| Brabant, Holland | |
| D: | 22 Aug 1304 |
| Philippa of Luxemburg | |
| M: | 1270 |
1218-1257
| Jean I d'Avêsnes, Seigneur d'Avesnes | |
| B: | 1 May 1218 |
| Étrœungt, Nord, Hauts-de-France, France | |
| D: | 24 Dec 1257 |
1225-1284
| Adelaide of Holland | |
| B: | About 1225 |
| M: | 9 Oct 1246 |
| D: | 1284 |
Abt 1180-1244
| Sir Bouchard d'Avêsnes, Seigneur d'Avêsnes and d'Etroen | |
| B: | Abt 1180 |
| M: | Jul 1212 |
| D: | 1244 |
| Étrœungt, Nord, Hauts-de-France, France | |
|
| Marie of Champagne, Empress of Constantinople | |
| B: | 1174 |
| D: | 9 Aug 1204 |
| Baldwin VI, Count of Hainaut and Latin Emperor of Constantinople | |
| B: | Jul 1171 |
| Valenciennes, Nord, Hauts-de-France, France | |
| M: | 6 Jun 1186 |
| D: | 11 Jun 1205 |
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