Saint Angilbert was a noble Frankish poet who was educated under Alcuin and served Charlemagne as a secretary, diplomat, and son-in-law. He seems to have been brought up at the court of Charlemagne at the palace school in Aquae Grani. He was educated there as the pupil and then friend of the great English scholar Alcuin.
As the friend and adviser of Pepin, he assisted for a while in the government of Italy. At one time, he served an officer of the maritime provinces. He accompanied Charlemagne to Rome in 800 and was one of the witnesses to his will in 811.
In 790, Angilbert retired to the abbey of Centulum, the “Monastery of St Richarius” (Sancti Richarii monasterium) at present-day Saint-Riquier in Picardy. Elected abbot in 794, he rebuilt the monastery and endowed it with a library of 200 volumes. He spent a great deal rebuilding Saint-Riquier; when he completed it, Charlemagne spent Easter of the year 800 there. In keeping with Carolingian policies, Angilbert established a school at Saint-Riquier to educate the local boys.
Sources:
https://en.wikipedia.org/wiki/Angilbert
"St. Angilbert", Martyrology, Abiquiú, New Mexico: Monastery of Christ in the Desert, 1998, archived from the original on 11 June 2015.
Baynes, T. S., ed. (1878), "St Angilbert" , Encyclopædia Britannica, vol. 2 (9th ed.), New York: Charles Scribner's Sons, p. 29
Frassetto, Michael (2003), "St. Angilbert (c. 740–814)", Encyclopedia of Barbarian Europe, Santa Barbara, California: ABC-CLIO, p. 32, ISBN 978-1576072639
