Thomas Costello (1744 – 1831) was an Irish prelate who served as Bishop of Clonfert. He was born in

Ballaghaderreen Ballaghaderreen () is a town in County Roscommon, Ireland. It was part of County Mayo prior to 1898. It is located just off the N5 National primary road. The population was 1,808 in the 2016 census. History As of 1837, the town was recorde ...

. Coen went to the Irish College in Rome to study for the priesthood and was ordained priest in December 1767. Coen was appointed titular bishop of Milevum on 26 January 1816; and Diocesan Bishop of Clonfert on 6 July 1786. He died in post on 8 October 1831.

References

Roman Catholic bishops of Clonfert 19th-century Roman Catholic bishops in Ireland 1744 births 1831 deaths People from Ballaghaderreen Pontifical Irish College alumni Christian clergy from County Roscommon {{Ireland-RC-bishop-stub