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William I, Count of Hainaut, Count of Hainaut, Count of Holland, Count of Zeeland, was born 1286 to John II, Count of Hainaut (1247-1304) and Philippa of Luxembourg (1252-1311) and died 7 June 1337 of unspecified causes. He married Jeanne de Valois (c1294-1342) 19 May 1305 JL . William I of England (1027-1087), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.



Children



Offspring of William d'Avesnes and Jeanne de Valois (c1294-1342)
Name Birth Death Joined with
Joanna of Hainaut (c1307-1374) 1374 Wilhelm I. von Jülich (c1299-1361)
Margaret II of Hainaut (1311-1356) 1311 23 June 1356 Ludwig IV. von Wittelsbach (1282-1347)
Philippa of Hainaut (1311-1369) 24 June 1311 Valenciennes, Nord, France 1369 Windsor Castle, Windsor, Berkshire, England, United Kingdom Edward III of England (1312-1377)
William II of Hainaut (1307-1345) 1307 26 September 1345 Johanna van Brabant (1322-1406)
Isabella of Hainaut (1323-1361)
Louis of Hainaut (1325-1328)

















Footnotes (including sources)

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