Mummolus (sometimes Mommolin or Mommole) was the second abbot of Fleury Abbey at Saint-Benoît-sur-Loire for 30 years between September 632 and January 663.

[5] Mummolus sent one of the monks to Monte Cassino, where the monastery had been ruined by the Lombards, with the mission of stealing the saints' relics from their grave in the church.

Mummolus gave him permission to attempt to retrieve their relics, and he was joined by some monks from Le Mans.

Miraculous aid led them to the tomb at Monte Cassino and helped them smuggle the bodies to Fleury.

One example is a painting at the Sainte-Croix abbey in Bordeaux by the French painter Guillaume Cureau: Saint Mommolin healing a possessed person dated 1647.