We don’t know a lot about its origins which do not come from a “ deduzione coloniale” Probably Flavia Fidentia as other town in this region was born as “ prefectura” following the “deduzioni veritiane” of the second half of II cent B.C., and it was trasformed in “ municipium” during the Ist cen B.C. It was probably due to the “ provvidenze” given by Silla after the victory of his lieutenant Lucullo on Mario’s troups in 82 B.C. just near this village which had offered him shelter.

In different points of the urban center ( Via Malpeli) and in the territory ( Villa Chiara) were found some blend ceramics scratch decorated ,dated back to the period La Téne D, which can be referred to the first phases of life of the town more than to Celtic.
Nevertheless it is a no planned urban center and deeply changed by subsequent attendences, and since there are no systematic excavations, it is extremely difficult to re-build the planimetric developement, which found the generating axe in Via Emilia.
Among the later hypothesis: 1997- Dall’Aglio sees in the current Via Berenini and Via Gramsci the two axes which divide the urban nucleus in four settled blocks, quite equal and with these boundaries: South Vicolo Zuccheri, North Via Dal Verme and East Vicolo Ronchei, West Via Amendola. 2000- Maria Calvani instead, sees the town to length in 8 blocks parallel to Via Emilia ( North and South ) and the forum of “Municipium in Piazza Garibaldi in a greatly decentralized position.
For both these scholars the consolar street crossed the river Stirone by a stone bridge, in a more favourable point whose a remaining arch can be seen under the Visconti tower in the west of the town and a pier has been recently discovered during the excavation of Piazza Grandi.