Why Nubians did not write their historical register in their own languages until very late in antiquity? We know about Nubian cultures and their people largely through Egyptology and some writings of the ancient Greek travelers , and some little biblical information . The source of the Nubian history can be divided between written Egyptian documents and register , such as the discovered royal records , the commercial and military expeditions during the Pharaohs times and the archeological excavations and investigations targeting to research and to analyze the discovered objects in the different ancient Nubian settlements .