At the origin of the Amalfitani district in the west area of early medieval Salerno is the sacking perpetrated in
838 AD by Prince
Sicardo in the Byzantine Duchy of Amalfi. The Amalfi people were forcibly transferred to Salerno and forced to forge ties of consanguinity with the Longobards of Salerno, in the hope of favoring the economic and commercial take-off of the city, of inserting it in the traffic circuit managed by the Amalfitans themselves in the Mediterranean and, probably, to weaken the contingent of men that Amalfi had at its disposal to defend itself from the continuous attempts of conquest made by the Longobards of Salerno. Sicardo had to order his men almost a mass 'deportation' against the "
Atranenses", as they are remembered in the notarial deeds of the
10th and 11th centuries, wishing to gain the wealth and wisdom of the Amalfitans in Salerno and the Duchy of Benevento. The vicus Sancte Trophimenae, built in the western area of the civitas nova, had to have a quadrangular planimetric shape, bordered to the north by the church of the Madonna della Lama and by the current Via T. Tasso, to the south by the Porta Catena, to the east by the Porta Rateprandi and to the west from the church of Santa Trofimena. The settlement controlled in this way at least two of the most important road routes of medieval Salerno, to the north the current via Tasso which, probably, follows the path of one of the decumani of the ancient Roman "castrum" and throughout the medieval age remains one of the most popular audiences; and to the south the via carraria, a paved road, perhaps already existing in ancient times and intended for the passage of the wagons that from the port transferred goods to the city and to the market. The neighborhood gravitated around two of the city gates, Porta Catena and Porta Rateprandi, not far from the vicus Iudeorum, with which it constituted the commercial soul of medieval Salerno. If, in fact, the Atranenses deserved the unusual appellation of sailors-peasants, preferring to invest the proceeds of their commercial activities in the purchase of land or by exchanging mainly agricultural products, the Jews mainly dealt with the crafts sector.