Further excavations conducted recently led to the discovery of important early Christian remains likely to significantly a reevaluation upwards of the size of Ajaccio city in Late Antiquity and the beginning of the Middle Ages. The city was in any case already significant enough to be the seat of a diocese, mentioned by Pope Gregory the Great in 591. The city was then further north than the location chosen later by the Genoese - in the location of the existing quarters of "Castel Vecchio" and "Sainte-Lucie".