 - 1257
Generation: 1
| 1. | John of Avesnes, Count of Hainaut (son of Burchard of Avesnes d'Avesnes and Margaret II of Constantinople, Countess of Flanders); died on 24 Dec 1257. John married Adelaide (Aleidis) of Holland, Countess of Holland on 9 Oct 1246. Adelaide (daughter of Floris IV of Holland, Count of Holland and Matilda of Brabant, , Countess of Holland) was born in c .?1230; died in 1284 in Valenciennes, , Nord-Pas-de-Calais, France; was buried on 9 Apr 1284. [Group Sheet] [Family Chart]
Children:
- John II of Hainaut, Count of Hainault and Holland died on 22 Aug 1304.
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Generation: 2
Generation: 3
Generation: 4
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