Bryan Ward-Perkins is a Professor of History at the University of Oxford and Principal Investigator of the ERC-funded Cult of Saints in Late Antiquity project, which is examining and making available on-line the evidence for saintly cult from its origins in the 4th century up to around AD 7..Antonio Felle is a Professor of Archaeology and Epigraphy at the Università degli Studi ‘Aldo Moro' di Bari, an expert on the Christian epigraphy of Rome, and Director of the on-line Epigraphic Database Bari, which collects and makes available the epigraphic evidence for early Christianity.