Abbey of Saint Bertin — Wikipedia

The Abbey of Saint Bertin was a Benedictine monastic abbey in Saint-Omer, France. The buildings are now in ruins, which are open to the public. It was initially dedicated to Saint Peter but was rededicated to its second abbot, Saint Bertin. The abbey is known for its Latin cartulary (Chartularium Sithiense) whose first part is attributed to Folcwin. The abbey was founded on the banks of the Aa in the 7th century by Bishop Audomar of Thérouanne, who is now better known as Saint Omer. He sent the monks Bertin, Momelin, and Ebertram from Sithiu (now St-Omer) to proselytize among the pagans in...