[4] The institution then passed under the control of the kings of the Ottonian dynasty: a plaque placed inside the church recalls the building interventions sponsored by Emperor Otto III in 980.

The same sovereign in 1001 confirmed to the monastery the privileges and donations obtained by the previous kings and emperors, remembering also that the institution kept a relic of the wood of the Cross, together with the remains of the Dalmatian martyr Felix.

In particular, with the diploma of Emperor Henry II in 1014, the monastery obtained goods on Lake Maggiore, in Coronate, Voghera, Travacò Siccomario, Pieve Porto Morone and Tromello.

[7] Recent archaeological excavations have allowed us to reconstruct the architectural events of the church with greater precision, which datable around the middle of the eighth century[8] and was built on the remains of late Roman buildings.

During the excavations of 1996/97 eight tombs were found (while other burials came to light on via San Felice), some of which are internally frescoed with sacred images and which are visible inside the university hall that occupies the space of the former church.

These burials date back to the eighth century and in one of them there is an inscription with the name of the abbess Ariperga while in another tomb the skeleton of a nun was found accompanied by a gilded bronze ring with an embedded gem and leather shoes at the feet.

In 1611 the abbess Bianca Felicita Parata of Crema had the epigraph transcribed on the north wall of the church with which they remembered the building interventions wanted by Emperor Otto I.