Folcuin was a Frankish cleric and abbot who served as the Bishop of Thérouanne starting in 816. Born around 800 to Hieronymus, a descendant of Charles Martel, he was confirmed in his episcopal role by Louis the Pious. Throughout his career, he remained a loyal figure to the emperor and actively participated in various ecclesiastical synods. He died in Esquelbecq in December 855 while conducting an official visit.
Life and career
As a prominent bishop, Folcuin held the position of missus dominicus under Charles the Bald. He maintained strong connections to the Abbey of Saint Bertin, even facilitating the transfer of sacred relics to ensure their safety from Norman threats. His historical contributions include work on the cartulary of the Saint Bertin abbey, which documented the institution's history and various charters.
Veneration
Recognized as a saint, Folcuin is commemorated in both the Roman Catholic and Eastern Orthodox traditions. His remains were elevated in 928 and later translated in 1181. Historical records indicate that his name appeared in regional liturgical manuals by the early eleventh century, reflecting his importance to the local monastic identity.