Holy Trinity Church (C of I), Drumnakilly Road, Drumnakilly, Omagh, BT79 0JY

Holy Trinity Church is a detached, double-height Church of Ireland building built around 1843, located on the south side of Drumnakilly Road in the townland of Drumnakilly, Omagh. The church was constructed by subscription on a site granted by Alexander McCausland, and was consecrated by Primate Lord John George Beresford on 21 November 1843. Shortly after completion, the nave was lengthened to its present size. The building was initially a chapel of ease to the parish church of Termonmaguirke but later became a district church and perpetual curacy.

The church is cruciform in plan, consisting of a nave with chancel to the east, transepts to the north and south, a gabled porch to the north, and a vestry to the south. Walls are constructed of uncoursed random rubble stone with droved ashlar finish sandstone dressings, set over a projecting chamfered rubble stone plinth. Pitched natural slate roofs with blue and black clay ridge tiles feature corbelled stone verges with stepped horizontal ends supported on ovolo skew-corbels. Replacement half-round profile aluminium rainwater goods are supported on a corbelled course throughout.

The principal elevation faces north, where the double-height gabled transept abuts the left, with three lancet windows visible on the exposed section to the right. The north transept features diagonal buttresses with offsetting and plinth, topped by a square-plan stone finial on a corbelled stone base with a quatrefoil panel, stop-chamfered shaft, and cross-gable detail.

The north gable is abutted at centre by a single-storey gabled entrance porch. The porch gable contains a central quatrefoil window to its apex, with single windows to each cheek (the east cheek window has a hoodmould with moulded label-stops). The entrance is positioned at the right cheek through a Tudor arched opening with a stop-chamfered stone surround, containing a square-headed timber panelled door with a fixed timber Tudor arched panel above.

The chancel is detailed similarly to the nave with diagonal buttresses, offsetting, and plinth. It is topped by a beaded finial on an octagonal plinth. The east gable contains a central Tudor arched painted timber lattice-glazed Intersecting-tracery window in a plain droved finish sandstone surround with hoodmould and moulded label-stops. A blank quatrefoil sits to the apex, with blank cheeks to left and right.

The south elevation is abutted at right by the double-height gabled transept, with three windows visible on the exposed section to the left. The south transept mirrors the north transept's detailing. The south gable is abutted at centre by a single-storey gabled vestry. The vestry south gable contains a single window, with the left cheek blank (masonry steps lead to a basement level boiler house). The right cheek contains an entrance through a Tudor arched opening with stop-chamfered stone surround and a double-leaf square-headed timber panelled door with fixed timber Tudor arched panel above, accessed by a single stone step.

The west gable is detailed as the nave, featuring diagonal buttresses, offsetting, and plinth. A bell-cote crowns the apex with a gothic opening and intact bell. A central Tudor arched painted timber lattice-glazed Intersecting-tracery window in plain droved ashlar finish sandstone surround is surmounted by a quatrefoil window to the apex.

All lancet windows feature leaded lattice glazing in droved finish sandstone surrounds with splayed projecting sandstone cills unless otherwise stated.

The original interior survives. The steel trusses are notable, though crude in execution. This represents a good and robust example of a rural church in its original graveyard setting.

The church is situated in a rural churchyard setting, with a car park to the north and graveyard to the south and east. Access to the church is through curved cast-iron railings on a plinth wall, with tall square-profile painted masonry piers with pyramidal caps supporting original cast-iron gates. The churchyard is bounded to Drumnakilly Road by a timber fence.

The church first appears on the second edition Ordnance Survey map of 1854, together with the burial ground. Griffith's Valuation of 1858 records the 'Church and graveyard' under exemptions, with building valuation of £14. The lessor was revised from the representatives of Alexander Causland to the Irish Law Commission in 1905.