The first documentation relating to the church is by the historian Paul the Deacon, who refers to the foundation of a "church of the Savior" by Aripert I, king of the Lombards from 653 to 661, to build a place for his burial, as well as his sons Perctarit and Godepert and his nephews Cunipert, Liutpert (certainly not) and Aripert II, thus creating a Bavarian dynasty mausoleum, as well as to celebrate the definitive conversion of the Lombards to Catholicism.

With the diploma of September 30, 982, Emperor Otto II, donated to the monastery the villages and lands of Corteolona and Monticelli Pavese, and in Garlasco.

The importance of the Pavia monastery was certainly maintained until the mid-sixteenth century, as evidenced by the privilege of confirmation of property and immunity issued by Charles V in 1540, followed by a similar one of Philip II in 1555.

Important was 1585, the year in where an official ceremony was held for the deposition of the bones of the kings, already buried in the ancient church, in the new building.

At the back of the church, on the right side of the main altar, the chapel dedicated to San Martin of Tours is preserved.

On the dome, which is divided into eight segments, the celestial vault is painted, small clouds and heads of cherubs with purple wings forming concentric circles.

The keystone is dominated by the great dove of the Holy Spirit, which hovers in the sky with outstretched wings, emphasized by the rays of golden light.

[10]The cloisters was built between 1460 and 1470 and returned to the parish by the military in 1992, it has a square plan and is surrounded on four sides by a portico, supported by columns.