For other uses, see Bertin (disambiguation).
Bertin the Great

Statue of St. Bertin before the ruins of his former abbey
Born c. 615
Constance, Duchy of Alamannia, Frankish Kingdom
Died c. 709
Abbey of Saint Bertin, Saint-Omer, Frankish Kingdom
Venerated in Roman Catholic Church
(Diocese of Arras)
Major shrine Abbey of St. Bertin
Feast 5 September

Bertin (c. 615 – c. 709), also known as Saint Bertin the Great, was the Frankish abbot of a monastery in Saint-Omer later named the Abbey of Saint Bertin after him. He is honored as a saint by Catholic Church.


Bertin was born near Constance, then in the Frankish Duchy of Alamannia. At an early age, he entered the Abbey of Luxeuil, where, under the austere rule of its abbot, Columbanus, he prepared himself for a future missionary career. About the year 638 he set out, in company with two confrères, Mummolin and Ebertram, for the extreme northern part of France in order to assist his friend and kinsman, Bishop Omer, in the evangelization of the Morini. This country, now in the Department of Pas-de-Calais, was then one vast marsh, studded here and there with hillocks and overgrown with seaweed and bulrushes. On one of these hillocks, Bertin and his companions built a small house and they went out daily to preach the Christian faith to the natives, most of whom were still pagans.

Gradually some converted pagans joined the little band of missionaries and a larger monastery had to be built. A tract of land called Sithiu had been donated to Omer by a converted nobleman named Adrowald. Omer now turned this whole tract over to the missionaries, who selected a suitable place on it for their new Abbey of St. Peter. Additional villages[1] were granted by Count Waldebert, later a monk at Bertin's monastery of Sythiu and eventually Abbot of Luxueil and canonized, who gave his son at the baptismal font to Bertin, from whom the boy received his name and his education.[2] The community grew so rapidly that in a short time this monastery also became too small and another was built where the city of St. Omer now stands.

The fame of Bertin's learning and sanctity was so great that in a short time more than 150 monks lived under his rule, among them St. Winnoc and his three companions who had come from Brittany to join Bertin's community and assist in the conversion of the heathen. When nearly the whole region was Christianized, and the marshy land transformed into a fertile plain, Bertin, knowing that his death was not far off, appointed Rigobert as his successor, while he himself spent the remainder of his life preparing for a happy death. Bertin began to be venerated as a saint soon after his death. His feast day is celebrated on 5 September.

Mummolin, perhaps because he was the oldest of the missionaries, was abbot of the two monasteries until he succeeded the deceased Eligius as Bishop of Noyon, about the year 659. Waldebert's son Bertin, adopted by Bertin the founder, then became the third abbot.[3]

Ruins of the church Saint-Bertin, c. 1850

In later times the abbey became famous as a centre of sanctity and learning. About the 11th century, the name of the abbey was changed that of Saint-Bertin.[4] The Annales Bertiniani (830–882; Mon. Germ. Hist. Script. I, 419–515) are important for the contemporary history of the West Frankish Kingdom.[5] The abbey church, now in ruins, was one of the finest 14th-century Gothic edifices. In later times, its library, archives, and art-treasures were renowned both in and out of France.

The monks were expelled in 1791 by the invading forces of the French Revolutionary Army and in 1799 the abbey and its church were sold at auction.


  1. Arques with its associated rights, Sythiu, Longuenesse, Quelmes, Acquin, Coyecques, Audenfort and Escales are mentioned by Lambert of Ardres, (Lambert, Leah Shopkow, tr., The History of the Counts of Guines and Lords of Ardres ch. 3.3.
  2. Lambert ch. 3.3.
  3. The list of abbots is given in Gallia Christiana nova, III, 485 sqq. See Henri de Laplane, Les abbés de Saint-Bertin d'après les anciens monuments... (St. Omer, 1854–55).
  4. "St. Bertin, Abbot", Rev. Alban Butler, O.S.B.: The Lives of the Saints (1866), vol. IX
  5. The charters of the abbey are published in M. Guérard, Cartulaire de l'abbaye de St. Bertin (Paris, 1841; appendix by Morand, ibid., 1861).


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