St. Munchin is the peculiar patron saint for Limerick city as he is renowned for cursing the natives of the city. He is thought to have said:
the stranger would flourish and the native would perish.
This due to the natives of the city not assisting him as he was erecting his church in the city, while those passing through aided him without question.
As for Munchin himself, his background is up for debate and it is possible that there were multiple men called Munchin or Little Monk. One legend states that he was the nephew of Bloid, a king of Thomond while another states that he was one of three sons of Setna, grandson to Cas, and great-grandson to Conell of the Dalgais who came from the area Lahinch and Ennistymon in Co.Clare.
It has been said that he founded the original St Munchin’s Church in Limerick city in 630, where the Church of Ireland church of that name stands today. He was attributed with founding a church called Cill Mainchín on Inis Sibhton. As well a church in the island of Fidh-Inis, which lies within the large estuary where the river Fergus enters the river Shannon. He was supposedly the founder of Mungret Monastery, though this monestry has also been attributed to St Patrick and St Nessan.
He was supposed to be the first Bishop of Limerick, though again this has no foundation. There’s little question that the Church of Limerick had a continued succession of bishops from a very early date as Limerick appears to have held rank among the cities of Ireland.
Though we know nothing factual about the man called Munchin, it is still unusual that although he was famed for cursing the city, that the city held him in such esteem to name him as the patron saint.
The feast day of St Munchin is celebrated on January 3rd.
Mainchín mac Setnai (fl. late 6th century), also anglicised to Munchin, was allegedly the founder of the church of Luimneach (now Limerick), Ireland, and a saint in Irish tradition, acquiring special eminence as patron of Limerick City. Both his origins and the date of his association with the city are debated.
Through his father Sétna, Mainchín is alleged to belong to the Dál Cais, given a pedigree linking him to the ancestors of the O’Brien dynasty. His tutor was the Corco Mruad saint Mac Creicheaccording to the Life of that saint. Mainchín is said to have founded Luimneach when Ferdomnach, king from the Dál Cais, granted him land at Inis Sibtond.
A major problem with the above is that the Dál Cais themselves are unknown by that name before the 930s and are believed by scholars to be the descendants of a Déisi population which migrated into the region at an uncertain period. Before the Dál Cais the greater region appears to have been dominated for a time by another people entirely, the Uí Fidgenti, who eventually found themselves much displaced by the Dál Cais in the second half of the 10th century and following, although after having previously overrun many of the Déisi themselves in the very same territories.
Mainchín is also the patron saint of Brug Ríg, now Bruree, the former royal seat of the Uí Fidgenti.
It has been argued that his appearance in Limerick is actually due to his adoption by the later Norse there, with whom the O’Donovan family, late representatives of the kingdom (although of uncertain origins themselves), were closely associated.
In fact no “successors” of Mainchín in Limerick are known before the 12th century and so his existence there cannot be verified before then.
In the Martyrology of Donegal, Mainchín’s feast day occurs on 29 December. In Bruree, his feast day is commemorated on 2 January, but this date may have been erroneously taken from that recorded for St Manchán (Manchéne) of Min Droichit in the Félire Óengusso. The Roman Martyrology also lists January 2 as Mainchín of Limerick’s memorial.