During classical times, there are thought to have been about seventy Christian families in Durrës, as early as the time of the Apostles. The Archbishopric of Durrës was purportedly founded by Paul the Apostle, while preaching in Illyria and Epirus. Meanwhile, in medieval times, the Albanian people first appeared within historical records from the Byzantines. At this point, they were mostly Christianised. Islam arrived for the first time in the late 9th century to the region, when Arabs raided parts of the eastern banks of the Adriatic Sea. It later emerged as the majority religion, during centuries of Ottoman rule, though a significant Christian minority remained.