St Mary's Church, Derwen, is a redundant church in the centre of the village of Derwen, Denbighshire, Wales. It is designated by Cadw as a Grade I listed building, and is under the care of the Friends of Friendless Churches. History The structure of the present church is thought to originate from the 13th century, although because the churchyard is round in shape, it is likely that there had been an earlier church on the site. Additions and modifications were made during the following centuries. Dating from the pre-Reformation period are the east window, the roof and the rood screen. The bellcote is dated 1688. The church was restored in 1857 by Henry Kennedy at a cost of about £750 (); the restoration included removal of the west gallery. Encaustic tiles were laid in the sanctuary in 1907. The church was closed for worship in 1998–99, and was taken into the care of the charity, the Friends of Friendless Churches, in 2000–01. The charity holds a lease for 999 years with effect from 1 December 2002. Architecture Structure The body of the church is constructed in local gritstone, the porch is in shale, and the roof is of slate with a tile ridge. Its plan consists of a nave and chancel without any external distinction, a south porch, and a short north transept that was initially the stairway leading to the loft of the rood screen, and used later as a chimney. At the west end is a bellcote with a weathervane. On the gables to the north and east are crosses acting as finials, and supporting the west wall is a large buttress. The east window has five wide lights and is Perpendicular in style. In the south wall of the chancel is a three-light window and in the north wall is a small two-light window. All the other windows date from the 19th century. The single bell is dated 1751. Fittings and furniture The floor of the nave is flagged, the chancel has a wood-block floor, and the sanctuary has encaustic tiles. The outstanding feature of the interior is the rood screen which has retained its loft. It is finely carved with Perpendicular features. The font is dated 1665. The rest of the furniture dates from the 19th century. This includes a large, carved, octagonal pulpit, an oak altar, and an octagonal font. The stained glass in the