The parish church is dedicated to St Tathan, a Celtic saint who founded a church here in the 6th century.
The present church is built to a cruciform plan in the Decorated style of architecture of the 14th century with a central tower containing six bells. The south transept is the Berkerolles Chapel and houses two fine tombs-chests of the 14th century. They represent the two penultimate generations of the Berkerolles family of East Orchard, St Athan – Sir William (died 1327) and Sir Roger (died 1351) together with their wives. On the outside south wall of the nave, near the porch is a memorial in Welsh to John Williams (1728-1806), the famous hymn writer. The burial registers date from 1663, baptisms from 1679, and marriages from 1683 and St Tathan Church is a Grade 1 listed building
Regular Sunday service takes place at St Tathan Church at 11.00am (please check the Service Rota or contact the Parish Office on 01446 792439 for further details)
Bell ringing – due to problems with the tower and bell frame, ringing is suspended until further notice. However there is a practice every Thursday evening at St Illtud’s church please contact Mr Peter Mayle on 01446 792603 for further details.