Old Church of St Afran, St Ieuan and St Sannan, Llantrisant

The dedication to a "Saint Afran" is probably a corruption of Saint Afan. (The 16th-century Peniarth MS 147 lists the church as dedicated to "Sannan and Afan and Evan". The church was built probably in the late 14th century, and the south chapel was added in the 17th century. In 1899 a new church was built nearer the centre of the settlement, some 1.5 km to the east, and it became redundant. Its fabric deteriorated, by 1937 it was in a state of disrepair, and by 1970 it was in ruins and without a roof. It was restored in 1976–77.

Internally the church is paved with stone slabs. Most of the fittings and furniture presumably date back to the 18th century, including the box pews and benches. The altar is simple, consisting of a slate slab supported on piers; a simple cross is set into the wall behind it. The font dates from the 12th century and consists of a deep circular bowl on a cylindrical column standing on a stepped rough base. The font is not original to the church, but was moved from the church at Grove, Buckinghamshire when it was converted into a house in the 1970s. There are memorials on the walls, and a gravestone set on a chest on the floor of the nave.