Establishment
It was established in 1255 by Count Rudolf I von
Neuchâtel 
-Nidau. A previous attempt to establish a monastery on the site in 1247 there had been unsuccessful. The monastery church was built in 1300 and was the burial church for the Counts of Neuchâtel-Nidau. After their line became extinct in 1375, the monastery was inherited by the Counts of Kyburg-Burgdorf until it was acquired by Bern in 1388. Documents from 1295, 1309 and 1314 indicate that the monastery was a local pilgrimage site and expanded several times.