A burial stone dating from AD 550 at the latest, discovered in 1742, suggests that St Sadwrn of Llansadwrn may also have been known as Sadyrnin (Saturninus), creating a link to two churches in Carmarthenshire in south Wales: Llansadwrn, a chapel under Cynwyl Gaeo and Llansadyrnin, both of which were dedicated to Sadwrn and had fairs on 5 October.[1]