The earliest part of the church of St John the Baptist is the 13th century chancel, with the remaining parts dating to the 15th or early 16th centuries. The Norman font survives but has been built into a later surround.
The sub-circular shape of the churchyard and the presence of an inscribed memorial stone of c. 6th century date (Datuidoc’s stone) strongly suggest that this is an early religious site.
The church is built of granite and the graffiti is found mainly on two of the medieval limestone effigies, and on the parclose screen. The graffiiti on the effigy in the south transept includes what appears to be a strange creature (?heraldic).
Oddly, there are several examples of the letter N, and something resembling it but with the strokes detached – looking more like I V and V I. There are also what appear to be tally marks and remains of feint large letters on the parclose screen. On a bench at the back of the north aisle there is a deeply carved W followed by a cross – perhaps reserving that seat for a particular person (?the Warden).