Children |
| 1. Alice of Hainault, b. 1273, Valenciennes, Nord, France , d. 26 Oct 1317, Pembroke, Pembroke, Wales (Age 44 years) |
| 2. Isabelle d'Avesnes, b. 1275, Valenciennes, Nord, France , d. Dec 1305 (Age 30 years) |
| 3. Jean de Beaumont, b. 1278, Valenciennes, Nord, France , d. 11 Mar 1356, Beaumont, Vermandoise, Normandie (Age 78 years) |
| 4. Jeanne, b. 1279, Valenciennes, Nord, France , d. 11 Jul 1302 (Age 23 years) |
+ | 5. Marie I. la Marche, Count de Hainault de Avesnes, b. 1280, Valenciennes, Nord, Nord-pas-de-calais, France , d. 5 Sep 1354, Chateau De Murat, Bourbonnois, France (Age 74 years) |
| 6. Marguerite de Avesnes, b. 1280, Valenciennes, Nord, Nord-pas-de-calais, France , d. 18 Oct 1342, Valenciennes, Nord-pas-de-calais, France (Age 62 years) |
| 7. Valeran de Avesnes, b. 1282, Valenciennes, Nord, France , d. Yes, date unknown |
| 8. Henry of Avesnes, Canon in Cambrai, b. 1284, Holland , d. 18 Mar 1303, Kammerich, Grh, Germany (Age 19 years) |
| 9. Guillaume de Hainaut, Comte de Hainaut et Hollande, b. 1 Nov 1286, Avesnes-chaussoy, Somme, Picardie, France , d. 7 Jun 1337, Valenciennes, Nord-pas-de-calais, France (Age 50 years) |
| 10. Willem de Cuser, b. 1290, Schoten, Haarlem, Noord-holland, Netherlands , d. 19 Jan 1355, Schoten, Noord-holland, Netherlands (Age 65 years) |
| 11. Aleid d' Avesnes, b. 1292, Valenciennes, Nord-pas-de-calais, France , d. 1351 (Age 59 years) |
| 12. Matilda, Abbess of Nivelles, b. 1292, Avesnes-sur-Helpe-Nord, Avesnes-sur-helpe, Nord, Nord-pas-de-calais, France , d. 1354, Walincourt Selvigny, Nord, Nord-pas-de-calais, France (Age 62 years) |
| 13. Ida de Avesnes, b. 1294, Avesnes, France , d. Dec 1351 (Age 57 years) |
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