William I, Count of Hainaut

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William I, Count of Hainaut
Guillaume Ier de Hainaut.png
William I, Count of Hainaut
Spouse(s) Joan of Valois
Noble family House of Avesnes
Father John II, Count of Hainaut
Mother Philippa of Luxembourg
Born c.  1286
Died 7 June 1337(1337-06-07)
Valenciennes

William I, Count of Hainaut (c. 1286 – 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.

Career

William, born c.  1286, was the son of John II, Count of Hainaut, and Philippa of Luxembourg, daughter of Henry V of Luxembourg.[1] He was the brother of John of Beaumont and Alice of Hainault.

William was originally not expected to become count. After the deaths of his elder brothers, John (killed at Kortrijk in 1302) and Henry (d. 1303), he became heir to his father's counties.[1]

Prior to becoming count, he was defeated by Guy of Namur at the battle on the island of Duiveland in 1304. Guy and Duke John II of Brabant then conquered most of Zeeland and Holland, but these territories were recovered again when William became the new count in the same year.[2] William continued the war with Flanders until the Peace of Paris in 1323, during which the Count of Flanders renounced all claims on Zeeland. William, in turn, gained all of Zeeland but agreed to renounce all claims on Imperial Flanders.[2] William had occupied most of the Bishopric of Utrecht and tried to conquer Friesland but was repelled by Hessel Martena. At the death of his uncle, Guy d'Avesnes, Bishop of Utrecht, William took his fief of Amsterdam and annexed it to Holland.[2]

Many of his daughters married with important rulers of Europe; King Edward III of England and Holy Roman Emperor Louis IV were married to his daughters, while he was married to the sister of the King Philip VI of France.[3] With these important alliances William gained considerable influence and respect which he used to advance the interests of his counties.[2]

Family

File:William I of Hainaut.jpg
Seals of William I

On 19 May 1305 William married Joan of Valois,[1] sister of the future king Philip VI of France,[4] and had the following children:

Ancestors

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Family of William I, Count of Hainaut
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 16. James of Avesnes
 
 
 
 
 
 
 
 8. Bouchard IV of Avesnes
 
 
 
 
 
 
 
 
 
 
 
 17. Adela of Guise
 
 
 
 
 
 
 
 4. John I of Avesnes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 18. Baldwin I of Constantinople
 
 
 
 
 
 
 
 9. Margaret II, Countess of Flanders
 
 
 
 
 
 
 
 
 
 
 
 19. Marie of Champagne
 
 
 
 
 
 
 
 2. John II, Count of Holland
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 20. William I of Holland
 
 
 
 
 
 
 
 10. Floris IV, Count of Holland
 
 
 
 
 
 
 
 
 
 
 
 21. Adelaide of Guelders
 
 
 
 
 
 
 
 5. Adelaide of Holland
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 22. Henry I, Duke of Brabant
 
 
 
 
 
 
 
 11. Matilde of Brabant
 
 
 
 
 
 
 
 
 
 
 
 23. Mathilde of Flanders
 
 
 
 
 
 
 
 1. William I, Count of Hainaut
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 24. Henry III of Limburg
 
 
 
 
 
 
 
 12. Waleran III of Limburg
 
 
 
 
 
 
 
 
 
 
 
 25. Sophia of Saarbrücken
 
 
 
 
 
 
 
 6. Henry V of Luxembourg
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 26. Henry IV of Luxembourg
 
 
 
 
 
 
 
 13. Ermesinda of Luxembourg
 
 
 
 
 
 
 
 
 
 
 
 27. Agnes of Guelders
 
 
 
 
 
 
 
 3. Philippa of Luxembourg
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 28. Theobald I, Count of Bar
 
 
 
 
 
 
 
 14. Henry II, Count of Bar
 
 
 
 
 
 
 
 
 
 
 
 29. Ermesinde of Bar-sur-Seine
 
 
 
 
 
 
 
 7. Margaret of Bar
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 30. Robert II, Count of Dreux
 
 
 
 
 
 
 
 15. Philippa of Dreux
 
 
 
 
 
 
 
 
 
 
 
 31. Youlande de Coucy
 
 
 
 
 
 

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 Detlev Schwennicke, Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge, Band II (Marburg, Germany: Verlag von J. A. Stargardt, 1984), Tafel 4
  2. ↑ 2.0 2.1 2.2 2.3 Encyclopedia Britannica, Eleventh Edition, Vol. XIII, Ed. Hugh Chisholm (New York: Cambridge University Press, 1910), p. 608
  3. ↑ George Andrews Moriarty, The Plantagenet Ancestry of King Edward III and Queen Philippa (Salt Lake City: Mormon Pioneer Genealogy Society, 1985), p. 175
  4. ↑ Detlev Schwennicke, Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge, Band II (Marburg, Germany: Verlag von J. A. Stargardt, 1984), Tafel 22

See also

William I, Count of Hainaut
Born: c.  1286 Died: 7 June 1337
Preceded by Count of Hainaut,
Holland and Zeeland
1304–1337		 Succeeded by
William II
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