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Guillaume I Capet-Bourgogne de Montagu, Lord of Montagu, was born 1222 to Eudes I de Montagu (1196-1248) and Elisabeth de Courtenay (1199-aft1269) and died 1300 of unspecified causes. He married Jacquette de Sombernon (c1230-1259) 1249 JL . He married Marie des Barres 1263 JL . Charlemagne (747-814), Hugh Capet (c940-996), Rollo of Normandy (860-932), 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 Guillaume I de Montagu and Jacquette de Sombernon (c1230-1259)
Name Birth Death Joined with
Alexandre III de Montagu (1250-1296) 1250 1296 Agnès de Neufchâtel (1258-1271) Agnès de Neufchâtel (1258-1271) Agnès de Noyers (c1250-c1297)



Offspring of Guillaume I de Montagu and Marie des Barres
Name Birth Death Joined with
Eudes II de Montagu (1264-1333)
Alix de Montagu (1266-)
Agnès de Bourgogne-Montagu (1268-)









 






Footnotes (including sources)

‡ General
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