Church of St Deiniol

The Church of St Deiniol is a Decorated style church, dating from the 19th century. It has a simple cruciform plan, incorporating a nave, short chancel, transepts, a north porch, and a vestry. The church is constructed of roughly coursed rubblestone with buttered pointing, and granite ashlar dressings. The large slate roofs have coped verges, trefoil-gabled kneelers, and stone crosses to the gables.

The nave is buttressed in three bays and features pointed, two-light trefoil-headed windows with small mouchettes and hoodmoulds to the eastern bays. A gabled porch is located in the west bay on the south side and has an iron cross to the gable, along with pointed, hollow-chamfered inner and outer doorways—the former incorporates a nail-studded strap-hinged door, and the latter has iron gates. Small, narrow, trefoil-headed windows without glazing are present on the sides, and two old stoups stand outside. The west wall of the nave includes a tall, slightly projecting gabled bellcote with a single bell in an arched opening at the top. A Latin inscription with the date 1843 is located above a single, broad lancet window to the ground stage. The chancel has a four-light east window with shallow trefoil-headed lights, further trefoils above forming a Y-tracery design, and additional mouchettes and quatrefoils to the top. The vestry features a small, single-light Caernarfon arch on its east side. The transept gables contain three-light trefoil-headed windows with mouchettes and quatrefoils at the tops.

The largely unaltered Victorian interior preserves some features from an earlier church. A simple, stone-corbelled arch-braced roof extends across the nave in four bays, with curved struts from collars to principal rafters, the same design repeated in the two bays of each transept. The chancel arch is double-chamfered with moulded capitals and bases to half-octagonal responds. An octagonal pedestal font in the north-west corner of the nave bears the inscription "IHC/ 1665/ WS: WP”. All other fittings are Victorian, including nave and transept pews, a brass lectern, an octagonal wooden pulpit with Gothic tracery panels, altar rails, and a reredos. Dark stained glass is found in the east window, and stained glass dating from around 1940 (in a 19th-century style) is present in the south nave windows. The bell is from 1930. A board in the vestry records that the church was rebuilt in 1843 with a grant from the Incorporated Society for Promoting the Enlargement, Building and Repairing of Churches & Chapels.

Various monuments, some refixed from the old church, are present. These include a plain pedimented tablet to Captain John Browning RN (died 1813) on the south wall of the nave; a marble memorial with plain pilasters and an urn commemorating William Thomas (died 1763) and his wife, Dorothy (died 1786), erected in 1817, on the north wall of the chancel; a tablet commemorating the son and daughters of Rice and Margaret Thomas with dates of death between 1775 and 1856 also on the south wall of the chancel; a brass plate with a shield to Robert Wyn, rector, died 1720, and another depicting an hourglass, skull, crossbones, and skeleton holding arrows to his daughter, Elizabeth (no date), on the east wall of the north transept; and a memorial to members of the Morris family (died between 1805 and 1830) on the west wall of the north transept. A slate slab First World War Memorial is on the south wall of the nave, along with further late 19th and 20th-century tablets throughout the church.