John O'Flynn was an Irish who served firstly as

parish priest A parish is a territorial entity in many Christian denominations, constituting a division within a diocese. A parish is under the pastoral care and clerical jurisdiction of a priest, often termed a parish priest, who might be assisted by one or ...

at Curry, County Sligo; and then as

Bishop of Achonry The Bishop of Achonry () is an episcopal title which takes its name after the village of Achonry in County Sligo, Ireland. In the Roman Catholic Church it remains as a separate title, but in the Church of Ireland it has been united with other bi ...

from 1809 until his death on 18 July 1817.Catholic Hierarchy
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References

1817 deaths 19th-century Roman Catholic bishops in Ireland Roman Catholic bishops of Achonry {{Ireland-RC-bishop-stub