Person:William I, Count of Hainaut (1)

Willem d'Avesnes, graaf van Holland en Zeeland
b.Abt 1286
m. 1270
  1. Henri d'Avesnes, Domherr of KammerichAbt 1271 - Aft 1303
  2. Alix d'Avesnes, Countess of NorfolkAbt 1273 - 1317
  3. Marguerite d'Avesnes, Countess of ArtoisAbt 1274 - 1342
  4. Isabelle de AvesnesAbt 1275 - 1305
  5. Jeanne d'AvesnesAbt 1279 -
  6. Mary of Avesnes1280 - 1354
  7. Valeran de HainaultAbt 1282 -
  8. Willem d'Avesnes, graaf van Holland en ZeelandAbt 1286 - 1337
  9. John of Beaumont1288 - 1356
  10. Simon d'Avesnes, Seigneur de BrusAbt 1291 - Aft 1356
  11. Aleid d'Avesnes, Countess of HollandAbt 1292 - Aft 1351
  12. Ida D' AvesnesAbt 1294 - Bef 1351
m. 19 May 1305
  1. William II _____, Count of Hainaut1307 - 1345
  2. Sibylla Countess of Holland1310 -
  3. Margaret II _____, Countess of Hainault1311 - 1356
  4. Philippa _____, d'Avesnes of Hainault1311 - 1369
  5. Jan Count of HollandAbt 1313 - 1316
  6. Joanna of Hainaut1315 - 1374
  7. Agnes _____, Countess of HollandEst 1320 - Aft 1327
  8. Catherine Of Hainault D'Avesnes1320 - Aft 1375
  9. Isabelle de HainautAbt 1323 - 1361
  10. Louis, Count of HollandAbt 1325 - 1328
Facts and Events
Name Willem d'Avesnes, graaf van Holland en Zeeland
Gender Male
Birth[1] Abt 1286 House of Avesnes
Marriage 19 May 1305 Chanay, Ain, Rhone-Alpes, Franceto Joan of Valois, Countess of Hainault
Death[1] 7 Jun 1337 Valenciennes, Nord, France
Reference Number? Q617496?


the text in this section is copied from an article in Wikipedia

William I, Count of Hainaut ( – 7 June 1337), was Count William III of Avesnes, Count William III of Holland and Count William II of Zeeland from 1304 to his death.

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References
  1. 1.0 1.1 William I, Count of Hainaut, in Wikipedia: The Free Encyclopedia.