William I, Count of Hainaut
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William the Good (Template:Langx, Template:Langx; Template:Circa – 7 June 1337) was count of Hainaut (as William I), Avesnes, Holland (as William III), and Zeeland (as William II) from 1304 to his death.
Career
William, born Template:Circa, was the son of John II, Count of Hainaut, and Philippa, daughter of Henry V, Count of Luxembourg.<ref name="ESII-4">Detlev Schwennicke, Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge, Band II (Marburg, Germany: Verlag von J. A. Stargardt, 1984), Tafel 4</ref> 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 apparent to his father's counties.<ref name="ESII-4"/>
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.<ref name="EB8-608">Encyclopædia Britannica, Eleventh Edition, Vol. XIII, Ed. Hugh Chisholm (New York: Cambridge University Press, 1910), p. 608</ref> 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.<ref name="EB8-608"/> 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.<ref name="EB8-608"/>
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.<ref>George Andrews Moriarty, The Plantagenet Ancestry of King Edward III and Queen Philippa (Salt Lake City: Mormon Pioneer Genealogy Society, 1985), p. 175</ref> With these important alliances William gained considerable influence and respect, which he used to advance the interests of his counties.<ref name="EB8-608"/>
Family
On 19 May 1305 William married Joan of Valois,<ref name="ESII-4"/> sister of the future king Philip VI of France,<ref>Detlev Schwennicke, Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge, Band II (Marburg, Germany: Verlag von J. A. Stargardt, 1984), Tafel 22</ref> and had the following children:
- William II, Count of Hainaut (1307–1345)<ref name="ESII-4"/>
- John (died 1316)<ref name="ESII-4"/>
- Margaret II, Countess of Hainault (1311–1356), married Louis IV, Holy Roman Emperor<ref name="ESII-4"/>
- Philippa of Hainault (c. 1313–1369), married King Edward III of England<ref name="ESII-4"/>
- Agnes (died 1327)<ref name="ESII-4"/>
- Joanna of Hainaut (1312–1374), married William V, Duke of Jülich<ref name="ESII-4"/>
- Isabelle of Hainaut (1323–1361), married Robert of Namur<ref name="ESII-4"/>
- Louis (1325–1328)<ref name="ESII-4"/>
- Jan Aelman (1320–1389) Illegitimate son and Knight
Ancestors
See also
References
Further reading
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