[1] Comgall was born sometime between 510 and 520 in Dál nAraidi, Ulster according to the Irish annals near the place now known as Magheramorne in present-day County Antrim.

[2] After serving as a soldier in his early life, he was educated under Fintan of Clonenagh and also studied under Finnian of Movilla, Mobhí Clárainech at Glasnevin, and Ciarán of Clonmacnoise.

[4] Initially intending to go to Britain, Comgall was dissuaded by Lugidius, the bishop who ordained him, at whose advice he remained in Ireland to spread the monastic life throughout the country.

According to the Irish annals, Bangor was founded no later than 552, though James Ussher and most of the later writers on the subject assign the foundation to the year 555.

[1] It is believed that among the monks trained by Comgall at Bangor, were Columbanus of Luxeuil-les-Bains (21 or 23 November) and Saint Moluag (25 June).

[7] After a period of intense suffering, Comgall received the Eucharist from Saint Fiacre and died in the monastery at Bangor.

He is also mentioned under 10 May, his feast-day in the "Felire" of Óengus of Tallaght published by Whitley Stokes for the Henry Bradshaw Society (2nd ed.