The news about the distribution of "Human seats" on the island during the Middle Ages, are extremely fragmentary and incomplete. The Roman Sandstone, whose settlement was greater in the area of Lacco, from the second half of the first millennium AD, called Insula Maior or simply Insula, whose dialect, Island, derives the name Ischia.

The historical events of the XIX century can be considered as planning started with the completion of the dangers caused by the Saracens. Following the political events which brought about the depopulation of the "Castle" and the consequent transfer of the island all the privileges and prerogatives, the Borgo di Celso took the official name of Ischia.