Nave and chancel church. The chancel (22.4 m x 7 m) is rubble-built with sandstone dressings with a possibly 13thc. door in the S wall and pointed lancet windows in the N and S walls. It has a round-headed chancel arch. The nave probably dates from the 15thc. and has limestone dressings. In the S wall of the nave are two ogival windows and a doorway. In the W wall is a cusped, ogee-headed window with belfry above.
A monastery was founded at the site in the 6thc., by St Finnian of Clonard. The present remains post-date the Anglo-Norman invasion. Following the invasion, lands here were granted to Hugh de Lacey and subsequently to the Nangle family.
The label stop is carved with a hunting scene showing three hounds springing on a long-tailed animal, possibly a wolf or a fox, which in turn has seized a smaller animal. Next to these is a tree/bush and a half-length figure of a man blowing a horn.
This label stop is very worn. It is carved with three half-length figures. The central figure has close-fitting garments or armour and holds a staff or batton. The outer figures wear robes, and each lays a hand on the central figure. In front of the figures is a table. The only object on this that is still easily readable is a cup or chalice below the hand of the R figure. Weathered carving, which appears to represent the drapes of a table-cloth lies below.
An animal is carved on the upper part, a human head lies below. The groove for the beam can be seen on the upper surface.
More damaged than N corbel. Carved with the remains of a full-length standing figure, clasping an object to its breast. Under the figure's feet are three small heads, possibly of demons.