The ground has been tilled over it. No stone course, no carved fragment, no foundation line breaks the surface. What survives instead is a paper trail, a cartographic ghost, and a graveyard that carries a saint's name without the building that originally justified it.

The story behind the site reaches back to around 580 AD, when Fintan, son of Pipan and a disciple of the monastic founder Comgall, was granted the place then known as Dun Bleisc and founded a church there. The name connects the ecclesiastical site to an earlier secular one, and the fort associated with that ancient place-name is recorded as still standing when Thomas Johnson Westropp surveyed the area in the early twentieth century. By the medieval period, the church had accumulated administrative weight: the prebend of Dunleisg, a church office carrying income from associated lands, was held in 1559 by a Reverend Matthew MacBryen under papal provision, grouped alongside Templebredon, Grean, and the chapel of Liscormuke. The graveyard also holds the burial of Eamon a Chnoic Ryan, noted in 1690, a figure from the turbulent landscape of late seventeenth-century Ireland. Canon O'Hanlon, writing around 1855, recorded a church still standing opposite the priest's house, near the Convent of Mercy. Sometime after that, it was levelled and the ground put to agricultural use.

The first edition Ordnance Survey six-inch map shows a church building in the north-east quadrant of the graveyard; by the revised 1927 edition, the annotation has changed to "Church (Site of)", which is the cartographer's quiet way of recording a disappearance. A visitor to St. Fintan's graveyard today will find no visible medieval fabric, but the graveyard itself remains, and knowing what the maps record changes how the ground reads. The site is in Doon, in the former parish of Coonagh, and the early OS maps, accessible through the OSi historical map viewer, are the most useful guide to understanding what once stood, and where.