A church at the site was present since the 5th to 8th centuries, but many subsequent reconstructions have occurred, and the present church dates mostly to the 18th-century refurbishment. Documents from 1106 mention its designation by the bishop Vittore II as pieve or parish church for the community. The church acquired the privilege to perform a baptisms in 1406.[1] In the lower areas of the apse, some of the original church can be glimpsed.
The church is notable for housing an early Lombard Romanesque marble cross (dated 848), originally from a nearby oratory. The cross is engraved with intricate interlace designs and latin script dating it to the rule of Emperor Ludwig's son, Lothair I.
The church has a baptismal font carved from the spolia of a late-Roman capital, as well as works by the Gandolfi family and the School of Guido Reni.[2] The main altarpiece depicts the Martyrdom of Saints Gervasio e Protasio (1727-1732) painted by Giuseppe Marchesi (il Sansone). Gervasio was martyred by flagellation, while Protasio was decapitated.[3]
