The parish of Lavey is very ancient going back almost to St. Patrick. The foundress of the first church was St. Damhnat. It was situated in the townland of Corrawillan on the bank of a river. To this day there is devotion to the Saint at the holy well there. In the late 15th century this church was replaced by a parish church half a mile to the northeast in Lavey townland. This was a plain oblong building, stone walled, thatched and rather small. Little remains of it today but a surrounding graveyard is still to be seen.

In the 17th century it was taken over by the Church of Ireland. After that mass was celebrated in sheds or barns or huts, wherever convenient and remote form possible notice or interference. Later little chapels were built in Carricknaveddan and Grellagh. Later near the new road from Enniskillen to Dublin a chapel was built at Knocknagillagh.

With Catholic emancipation the Grellagh chapel was replaced by a finer building at Killyconnan, which was begun in 1832. The cost of the church was £2,000, a great sum at the time. The last Mass was celebrated in this church on 11th May 1983. It was demolished and replaced by the present church, which was dedicated on Sunday 1st October 1984. The driving force for this project was the parish priest Fr. Seán E.T. O’Reilly. With the help of Fr. Brian Flynn CC and the building committee and the parishioners, he was able to complete this beautiful church. It cost £204,354.88. It was dedicated by the most Rev. Dr. Francis MacKiernan, Bishop of Kilmore. The architect was Philip Cullivan of Messers Gaffney and Cullivan. Near the front door a grotto to Our Lady was erected to mark the Jubilee Year. Come and visit this new church at Lower Lavey.