[1] In the early 11th century the abbot Elia built here a basilica which was mentioned, among the others, by Pope Gregory VII in 1176 and by Innocent III in 1211.
In 1607 a fallen tuff rock damaged the left side wall, and the church was subsequently restored at the expenses of the Farnese family, who owned the basilica from 1540 to 1649.
In 1740 a period of decline began, due to the construction of a parish church in the town, which ended in the 19th century when Pius IX had architect Virginio Vespignani restore the edifice.
The right side of the transept lost its frescoes after the 17th century reconstruction, while the left section had frescoes of the Apocalypse with, below, a procession of prophets and Old Men who raise veiled golden cups and march towards the Lamb of God.
The church had originally a large bell tower, built in 1260 by the canons of Santo Spirito in Sassia who had received the monastery by Pope Alexander IV two years before.