The building goes by two names, Killinane and Srugreana, and sits within a graveyard overlooking a wide stretch of bog. Nearby, about 230 metres to the south-east, lies St Gobnet's holy well, and the remains of a castle occupy ground close by. The church was associated with St Lonan, and a pattern, the traditional Irish gathering of prayer and communal observance held on a patron saint's feast day, was formerly celebrated here on the 3rd of March.

The documentary record reaches back to 1494, when taxation records of the Diocese of Ardfert listed the parish church of Killinane, rendered in Latin as 'Chilloneayn', alongside the neighbouring church of Aglish; both were at that time under the vicarship of one John O'Sullivan. The church appeared again in a diocesan listing in 1622, and by 1633 its incumbent minister was Thomas Harris, who held the parishes of Cahir and Glanbehy simultaneously and served under the patronage of Edwardus Spring. It was already described as ruinous by the mid-eighteenth century.

What survives is architecturally detailed enough to reward careful attention. The east gable rises 6.34 metres and is pierced by a single ogee-headed window, that is, one with a double-curved head popular in late medieval Irish church architecture, formed from dressed and chamfered sandstone blocks. The pivot-hole for its original shutter remains intact in the stonework. Beneath it sits a rough stone altar, and to the north of the window is a partly obscured aumbry, a small wall recess used to store liturgical vessels. The south wall doorway retains a drawbar socket and channel, the fittings for a heavy timber bar used to secure the door from inside, as well as a small stoup or font set into the north-east angle of the jamb. Beam-holes along the interior of the west gable suggest a timber gallery once occupied that end of the building, and the ghost of the roof structure is readable in the collar-beam recesses and rafter setbacks cut into both gables. Along the exterior of the side walls, rows of tilted projecting slabs just below where the eaves would have been served to throw rainwater clear of the masonry. Near the south-west corner, a stretch of rock outcrop carries a large number of incised grooves whose purpose remains unclear.