Small nave (14.32m x 5.74m) and chancel (6.7 m x 4.39 m) church. The W facade has antae and a flat-headed W doorway with inclined jambs and a cross in relief on the lintel. The chancel was added in the 12thc., and an out-building, possibly the sacristy (2.84 m x 2.38 m), was added later, probably in the 15th-16thc.

The church was an ancient foundation dedicated to St Bronndan. It was recorded as a prebendal church as far back as 1300. According to local tradition the church continued in use as a Catholic chapel up to the defeat of Edward Fitzgerald at the Battle of Aughrim in 1691.

The exterior mouldings of the E window are similar to those at St Mary, Ferns (Wexford). Leask considers the nave to have been originally about 9.14 m in internal length before its extension eastwards.