Lychgate and Churchyard Walls, including Sundial Base, at St Dyfnog's Church

The lychgate and churchyard walls at St Dyfnog's Church are a large timber-framed structure built in the Perpendicular style. The lychgate features supporting flank walls made of quarry-dressed limestone, topped with a slated timber-framed superstructure. This superstructure is supported by two moulded, arched-braced collar trusses that rise from ground level, with their lower sections partly embedded in the flank walls. The trusses have quatrefoil and trefoil cusping above their collars. The roof has deep verges supported by intermediate braced collar trusses with crenellated capitals at the springing, along with curved bracing at the top and bottom and cusped windbraces between the purlins. The bargeboards are cusped and feature ogee tracery. The lychgate also includes simple oak-panelled half-gates with open upper sections and curved ends.

The churchyard walls, which adjoin the lychgate, enclose the churchyard on the north and east sides. These walls are constructed of limestone rubble with triangular coping stones and reach a maximum height of 1.8 meters at the northwest corner. Here, the wall slopes slightly upwards and ends with a plain 19th-century iron gate at the junction with the almshouse forecourt wall. In the center of the eastern stretch, there is another plain 19th-century iron gate. At the southeast corner of the churchyard, the wall returns westward in two near-parallel sections that flank a stream bordering the churchyard on the west side, which is directed under the road via a culvert. The stretch of the churchyard wall drops down after about 10 meters to form a revetment, while the opposite stretch curves around before ending after approximately 6 meters.

The sundial base consists of a sandstone plinth topped with a two-stage sandstone finial, standing about 0.6 meters high. The lower section has chamfered sides, while the upper section is cylindrical. At the top, there is an abacus with chamfered corners that bears attachments for a presumed former sundial and features the weathered initials 'J.J'.