The abbey was founded by the Benedictines around 1070, probably by one Mainhard coming from
Santa Maria di Sitria. The abbey was based on an existing castle of the Monaldi family, on a site probably used in ancient times by the
Umbri as sanctuary. The abbey soon increased its power and prestige thanks to numerous donations. In 1138 its possession extended from
Rome (the basilica of
Santi Quattro Coronati) to
Perugia,
Spoleto and
Camerino. In the following centuries it had 97 monasteries, 41 churches and 7 hospitals. In the late 15th century the abbey passed to the
Olivetan Benedictines. The abbey started to decay from the 15th century. In the course of the
Napoleonic Wars, it was partially closed and in 1860, after the fall of the
Papal States, its dependencies were divided between the Italian state, the local bishopric and privates. Today, part of the Abbey belongs to the Diocese of Foligno, another part to the State and the third part to a private family. In 1979, the
Bishop of Foligno entrusted the abbey to the community of the
Little Brothers of Jesus Caritas who continue to live there. In the 1970s-1990s a substantial program of restoration was carried on. The church is still under restoration after having been damaged by an earthquake in 1997. ==Architecture==