He is mentioned in Gregory the Great's biography of the latter as the first oblate, offered to the monastery by his noble Roman parents as a young boy to be brought up in the monastic life.

Four stories involving Maurus recounted by Gregory formed a pattern for the ideal formation of a Benedictine monk.

The nave of its thirteenth-century church and some vineyards remain today (according to tradition, the chenin grape was first cultivated at this monastery.)

[7] Gregory the Great in the Dialogues recounts a tale wherein the young oblate Placidus was sent to fetch water from the lake and was carried away by the current.

After bringing Placidus back to shore, Maurus attributed the miracle to the prayers of Benedict; the abbot, to his disciple's obedience.

[8] Maurus was ordained a deacon, and subsequently Benedict, prior to leaving for Monte Cassino, appointed him coadjutor at Subiaco.

Around 543, Innocentius, the Bishop of Mans, sent his vicar, Adenard, to Monte Cassino to request Benedict to send some monks to Gaul.

When, in 868, Odo and the monks of Glanfeuil were obliged to flee to Paris in the face of Vikings marauding along the Loire, the remains of Maurus were translated to the abbey of Saint-Pierre-des-Fossés, later renamed Saint-Maur-des-Fossés.

[4] The Blessing of Saint Maur is customarily bestowed on the sick with a relic of the true Cross, in hopes of assisting to restore their health.

In art, he is depicted as a young man in the garb of a monk, usually holding an abbot's cross or sometimes with a spade (an allusion to the monastery of Saint-Maur-des-Fossés, literally "Saint Maurus of the Ditches").

He is also sometimes depicted with a scale, a reference to the implement used to measure a monk's daily ration of bread, given to him by Benedict when he left Montecassino for France.