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Humphrey De Hauteville (born, Hauteville-la-Guichard, Normandy—died 1057, Melfi, Apulia) was a soldier of fortune who led the Norman conquest of southern Italy after the deaths of his older brothers William and Drogo and succeeded them as count of Apulia (1051). Arriving in Italy c. 1035, Humphrey fought in Sicily and Apulia, in southern Italy, becoming count of Lavello in 1045. Six years later, as count of Apulia, he married the sister of the Lombard prince...