. 591- 12 November 661 or 662) was an Irish bishop.
Cummian was an Irish Bishop and fer léignid
) of Cluain Ferta Brénainn
), was an important theological writer in the early to mid 7th century. He is famous for a Paschal
letter which displays his high level of learning. It consists of five manuscript folios, contains quotes from the Vulgate
and Vetus Latina Bible
; patristic commentary by Augustine
and Gregory the Great
; extracts from Canon law
, ecclesiastical history and synodal
decrees from Nicea and Arles in their original, uncontaminated forms, in addition to a decretum that enjoined on the Irish that, if all else failed, they should take their problems to Rome.
Cummian also owned - among a library of at least forty manuscripts - ten Paschal tracts including one he attributed to "santus Patricius, papa noster"
and possibly a letter of Pelagius
. He may have written a computistical manual, and a commentary on Mark
. As Cummianus Longus he may be the author of a penitential, and a hymn on the apostles.
his relics, along with those of Bishop Maeinenn
of Clonfert were removed from the earth by the clergy of Brenainn, and they were enclosed in a protecting shrine.
He is said to have been a foster-son of Saint Ita