Folcuin

Saint Folcwin or Folcuin (; Old Dutch: *Folkwin; French: Folquin) (d. 14 or 15 December 855) was a Frankish abbot, cleric, and Bishop of Thérouanne (appointed 816).

Biography Folcwin was born to Hieronymus, son of Charles Martel, and his wife Ercheswinda (Ermentrudis). He was appointed bishop of Thérouanne in 816 and confirmed by Louis the Pious; he was consecrated in 817 by the Archbishop of Reims, likely Ebbo. He seems to have remained loyal to Louis. Folcwin participated regularly in synods, including the synods of Ingelheim am Rhein (840), Paris (846/7), Quierzy (849), and Soissons (853). Charles the Bald appointed him as Missus dominicus for one of the twelve West-Frankish missatica, one which apparently overlapped mostly with his diocese.

Folcuin died on 15 December 855 during an official visit to Esquelbecq. During his lifetime Charles the Bald seems to have already tried to forcefully appoint a successor; after his death, Hincmar made every effort to have his successor be appointed through a process originating in Thérouanne. Folcuin's remains were elevated on 16 November 928, and translated in 1181. The earliest evidence of a cult is found in the work of his relative, Folcuin, abbot of Lobbes,

Evidence from a hagiographical manuscript from the time of abbot Odbert (986-1007) shows that Folcwin, along with Silvin of Auchy (whose body was in Saint-Bertin, after Arnulf I stole it from Auchy-les-Moines), Bertin, and Winnoc, was "fundamental to [the] institutional identity" of the monks in Saint-Bertin. Folcwin's name is found in liturgical manuals from the area by the beginning of the eleventh century.

He is venerated in the Roman Catholic Church on 14 December, A review of his life was written during the next century by his grand nephew Folcuin, abbot of Lobbes, on request of Walter, abbot of Saint-Bertin.

Note Some sources say he died on the 15th of December, some say the 14th.