‘The Church of St. Nicholas. This massive and interesting building is situated in the demesne of Dunsany, a short distance north-east of the castle. It is probably on the site of the church which existed so early as 1302-1306, and seems to have been rebuilt about the middle of the 15th century by Nicholas Plunkett, first Baron of Dunsany and Killeen. In his will, dated on the feast of St Peter ad Vincula, 1461, although desiring to be “Y beret in ye chaunsell of Killeene before our Lady,” he heaped valuables on “St Nichols Church of Dunsany” – arras and scarlet hangings, crosiers and chalices of silver and gold, the latter being then in course of preparation by a goldsmith of Trim; missals, graduals, hymnals and psalters; a chaplet of pearls for the statue of the Blessed Virgin; copes of gold and red satin; chasubles; 100 shillings off the mill of Alomny (Athlumney); and money off Thomastown; and to find priests to pray for his soul and the souls of his wives Anne Fitzgerald and Elizabeth Preston; “and which of my children that breaketh my will, I leave him Christ’s curse and mine”.’
‘The building is 129 ft. long; the chancel, 21 ft. 3 in. wide and about 51 ft. long; the nave, 21 ft. 5 in. wide and about 55 ft. 6 in. long, the gable being “off the square”; the gable between is 5 ft. 7 in. thick, and the arch about 10 ft. wide. The chancel has a very rich east window inserted by the late Dowager Lady Dunsany to decorate the building, the older window having been destroyed long before, except the ancient sill, still apparent on the outside, and an elegant carving of an ivy spray. There are three windows to the south, and one to the north; the tracery and shafts have nearly disappeared, having been of fine yellow sandstone, like most of the details. The south wall has also a handsome sedile of three cinquefoil arches, the heads crocketed, and a heavy hood moulding, ending in a leaf to the left and a face to the right…North of the chancel is a residence three stories high, the lowest used as a vault by the Lords of Dunsany; fourteen steps lead to the second floor, which has a “squint” looking into the chancel; ten more steps lead to the upper storey. A passage and steps lead over the east gable to its roof. The tower-like S.E. buttress is of unusual dimensions. The nave has two doors (evidently rebuilt in recent times), one at each side. An ambry; a large perpendicular window and a recess occur in each wall. The north recess is two stories high; the upper reached by a staircase in the north pier of the chancel arch, which is round and rudely built, with clumsy projecting jambs, perhaps intended to support a rood beam or loft. The west gable has a large window; its tracery is gone, and its shafts are modern. It is flanked on the north by a lofty battlemented tower with curiously-corbelled roof and large double windows. It has entrances from the nave and from the north and west battlements. Another lofty tower at the south-west angle has a barrel stair of some sixty six steps.’
‘The altar-tomb has been horribly broken since Archdall’s day, and it was with difficulty the fragments of the sides could be found and pieced together…The effigies represent – to the right, a knight in full armour and conical helmet, a long sword on his left thigh, and his hands raised and clasped in prayer, his feet on a dog; to the left rests his wife in peaked head-dress, with traces of rich carving on it, a full-sleeved, long-pleated gown to the feet, which rest on a cushion carved with two birds and a cat’s head. The east slab had three niches, the left now broken away, the central one has a long-robed figure, and the right one a Bishop in pontificals. The west slab is now in the sedile; it has three floriated niches, with the flagellation of our Lord in the centre, and angels with censers on each side. The sides had similar niches, with shields between; the north side is in fragments in the nave, and has the arms of Plunkett (a bend and castle); Flemyng (checquy), 3 (probably Castlemartin), three castles; 4 Plunkett and FitzGerald. The south slab lies against the east gable and has shields of- 1, Plunkett; 2, FitzGerald (a saltire); 3, the heart pierced by two swords; 4, the instruments of the Passion.’
From an account of St Nicholas’ church, Dunsany, County Meath written by Thomas J Westropp and published in The Journal of the Royal Society of Antiquaries of Ireland, Fifth Series, Vol. 4, No. 3 (September 1894). Since that time, the altar tomb he describes above has been reconstructed and moved to a small space on the north side of the nave.