The area changed aspect during the V and VI centuries: a necropolis gradually set up, some objects from the grave goods found are shown. It is possible to date at the same period the few but clear traces of a small funerary church: the foundations of the apse and some burials inside and outside it (2). Probably the so-called “Manigunda sarcophagus” (3) belonged to this group of burials. Manigunda is the legendary founder of the monastic complex. According to tradition she was a Lombard noblewoman who, after drinking the water of the source of Bergoro (a village neighbouring Cairate) and recovering from illness, would decide to found the monastery as an act of thanksgiving and to dedicate it to Saint Mary of the Assumption. During the XV century the learned humanist Tristano Calco witnesses the discovery in this building of a sarcophagus containing the remains of a woman with a golden dress, gold fibulae and waistband. Maybe it was just this sarcophagus with the remains of Manigunda.