Prosopography of the Byzatine Empire (PBE I Online)This site, the PBE I Online edition, presents the research output of the Prosopography of the Byzantine Empire project, 641-867 (PBE I) which was carried out primarily at King's College London from the 1989 to 2001. It covered a period when the administrative structure and governing elite of Byzantium were undergoing crucial changes, and when the Mediterranean world of Late Antiquity was assuming the forms of the Middle Ages.