Thanks to the several Roman findings, such as epigraphs, coins and a funerary monument, it is possible to state with certainty that the ancient “Petra” was located in the middle of a territory rich in villas and farms.
The earliest document stating the existence of a village named Peturiolo (in Latin) belongs to the powerful Abbot Farfa, and it dates from 957. Later, Peturiolo was acquired by the Bishop of the city of Fermo. Then, in 977 he decided to sell it to a count, Count Mainardo.