This Benedictine abbey was first documented in 1029. The crypt of present church probably dates to around this time. The relics of St Victorinus were translated here at an unknown date. Pope Innocent IV consecrated church after its rebuilding in 1253 and its facade was completed in 1268. Pope Gregory XIII expelled the monks in 1577, and San Pietro became a parish church until 1613, when Pope Paul V gave it to San Pietro, Perugia, which belonged to the the Cassinese Congregation. This community was suppressed in 1866 but returned in ca. 1918.