The patron of San Pietro's centre, in the town of San Pietro in Guarano, is Santa Maria in Gerusalemme, celebrated on 8 September.
The church dedicated to her was inaugurated and blessed on 5 February 1902, on the occasion of the votive feast for the terrible earthquake of 1783: decoration work was still missing, but the building could already be used for worship on solemn days. The town's other patron, Saint Peter the Apostle, is celebrated on 29 June.