Pre-Roman times
The area of what is now Salerno has been continuously settled since pre-historical times, although the first certain signs of human presence date to the period between the 9th and 6th centuries BC. We know the Oscan-Etruscan city of Irna (founded in the 6th century BC), situated across the Irno river, in today's Salernitan quarter of Fratte. This settlement represented an important base for Etruscan trade with the Greek colonies of Posidonia and Elea. It was occupied by the Samnites around the 5th century BC as consequence of the Battle of Cumae (474 BC) as part of the Syracusan Sphere of influence.
The Roman city
With the Roman advance in Campania, Irna began to lose its importance, being supplanted by the new Roman colony (194 BC) of Salernum, developing around an initial castrum. The new city, which gradually lost its military function in favour of its role as a trade center, was connected to Rome by the Via Popilia, which ran towards Lucania and Reggio Calabria.
Archaeological remains, although fragmentary, suggest the idea of a flourishing and lively city. Under the Emperor Diocletian, in the late 3rd century AD, Salernum became the administrative centre of the "Bruttia and Lucania" province.
In the 5th century, after the fall or the Western Roman Empire, Salerno remained an important stronghold under the Ostrogoth domination of Italy.
In the following century, during the Gothic Wars, the Goths were defeated by the Byzantines, whose domination however later lasted only fifteen years (from 553 to 568), before the Lombards invaded almost the whole peninsula. Like many coastal cities of southern Italy (Gaeta, Sorrento, Amalfi), Salerno initially remained untouched by the newcomers, falling only in 646. It subsequently became part of the Duchy of Benevento.
The Lombard city
Under the Lombard dukes Salerno enjoyed the most splendid period of its history.
In 774
