Bertin: Profile of the seventh-century monk.Bertinus of Sithiu, OSB: Biography claims that he was a Benedictine first, and later used the Rule of St. Columban in his own monastery.St. Bertin: Monk living under the Rule of St. Columban, missionary to the Morini, monastic founder, abbot of St. Omer, d. about 709.St. Bertin, Religious: Short biography.