Momelin was a 7th-century Benedictine monk, abbot, and bishop who served the church in France and Belgium. Born near Lake Constance, he entered the monastery at Luxeuil before traveling with companions Saint Bertin and Saint Ebertram to the region of the Morini. After establishing early monastic communities near Saint-Omer, he was eventually chosen to succeed Saint Eligius as the Bishop of Noyon-Tournai. He is remembered for his leadership within the monastic movement and his long tenure overseeing his extensive diocese.