High Quality Content by WIKIPEDIA articles! Saint Angilbert (died 18 February 814) was a Frank who served Charlemagne as a diplomat, abbot, poet and semi-son-in-law. He was of noble Frankish parentage, and educated at the palace school in Aquae Grani (Aachen) under Alcuin. He is venerated as a saint, on the day of his death—18 February.