William I of Hainaut (c1286-1337)

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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 . Notable ancestors include Charlemagne (747-814), Alfred the Great (849-899), William I of England (1027-1087), Hugh Capet (c940-996), Rurik (c832-879). Ancestors are from the Netherlands, France, the United Kingdom, Germany, Belgium, Russia, Ukraine, Italy.


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) 1311 1369 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)

Namesakes of William I of Hainaut (c1286-1337)

 Birth placeDeath placeFatherMotherJoined with
William of Avesnes (aft1336-bef1345)William II of Hainaut (1307-1345)Johanna van Brabant (1322-1406)
William I of Hainaut (c1286-1337)John II, Count of Hainaut (1247-1304)Philippa of Luxembourg (1252-1311)Jeanne de Valois (c1294-1342)
William II of Hainaut (1307-1345)William I of Hainaut (c1286-1337)Jeanne de Valois (c1294-1342)Johanna van Brabant (1322-1406)

Footnotes (including sources)

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