A 7thc. foundation, although much of the remaining fabric of the church dates to the 15thc. A number of Romanesque fragments are kept in a stone store at the site. Two further carved stones are now held in the Fermanagh County Museum. These are a rectangular limestone block carved with a ecclesiastical figure, and a corbel/section of cornice carved with an exhibitionist figure. In 1894 the stone carved with the ecclesiastical figure was recorded as standing in the graveyard 'about ten yards to the north east of one of the walls of St Ronan's church' (Dagg 1894, 265). The carving of the exhibitionist figure was discovered built into the core of the S wall of the Church (Hickey 1976, 66).
In 2003 two carved stones forming a Crucifixion panel were rediscovered during building work to the gateway to Aghalurcher graveyard. (Stalley 2009)
The monastic site was founded in the 7thc. by St Ronan. No records of the site during the 11th–12thc. survive. The Annals of Ulster record for 1447 states that: 'This year a ribbed vault was put by Thomas Mag Uidhir junior, namely, king of Fir-Manach, on the church of Achadh-urchaire in honour of God and SS Tighernach and Ronan. And it was he that built the eastern gable of the church for the good of his own soul, and so on.' (Annals of Ulster, 159).
G. Dagg, 'The Bishop's Stone in the Churchyard of Aghalurcher', Journal of the Royal Society of Antiquaries of Ireland, 24 (1894), 264–70.
O. Davies, 'Aghalurcher church, being a correction to "A Preliminary survey of the Monuments of Northern Ireland"', Ulster Journal of Archaeology, 4, Series 3 (1941), 144.
A. Gwynn and R. N. Hadcock, Medieval Religious Houses: Ireland, London, 1970, 372.
W. M. Hennessy and B. Mac Carthy ed., The Annals of Ulster, 3, Dublin, 1895.
H. Hickey, Images in Stone: Figure Sculpture in the Lough Erne Basin, Belfast, 1976, 66.
S. McNab, Irish Figure Sculpture in the Twelfth Century, PhD. thesis, Trinity College Dublin, 1987, 2, 252–8.
A. Rowan, The Buildings of Ireland: North West Ulster. 1979, 361.
R. Stalley, 'In search of medieval sculpture: rockeries, walls and gateposts' in Lost and Found, ed. J. Fenwick, 179–187, Dublin, Wordwell, 2009.