The rectangular church was built by Sir William Stewart and almost completed by the time of Pynar’s survey in 1619 (Rowan, 1979). Incorporated into the fabric are a number of pieces of reused masonry, principally late medieval but with one possibly Romanesque window head. The window head is said to have been brought from Aughinish Island, Donegal (Kinahan, 1885-6).

The window head has been dated to the 12th or early 13thc. in most published works, probably on the basis of the round headed arch framed by a row of pellets. However, the style of the beasts above the window head is wholly late medieval. Single arcuated lintels are relatively commonplace in Ireland during the 15th and 16thc., and parallels for the beasts can be cited in numerous sculptural representations and the wall paintings at Clare Abbey, Mayo. While a 12thc. date cannot be completely ruled out, it would appear unlikely that the stone is of this date.

There is now no trace of the monastic site said to have existed on Aughinish Island.