For centuries the church has been a stopping place for pilgrims on their way to Bardsey, off the south west tip of the Lleyn peninsula.
The most interesting architectural feature of St Hywyn's is the wonderful Norman west door, but even more intriguing are a pair of carved stones displayed against the north east wall. The stones are thought to be the gravestones of two early priests, Veracius and Senacus. They were discovered at Mynydd Anelog, near the current Gors farm. It is possible that the priests were members of a small religious community there.
The left hand stone is inscribed, 'VERACIUS PBR HIC IACIT' which translates as, 'Veracius priest lies here'. The right hand stone is inscribed 'SENACUS PRSB HIC IACIT CUM MULTITU DNEM FRATRUM PRESBYTER', which translates as 'SENACUS PRIEST LIES HERE WITH MANY BRETHREN PRIEST '. The stones were probably carved in the late 5th or early 6th century.