North side of Llandybie Parish Church. Viewed from a bank of a river, the Afon Marlas. The church is part of the Church in Wales Diocese of St Davids. Llandybie's name is derived from St Tybie, said to be one of many daughters of Brychan Brycheiniog, a legendary 5th century king of Brycheiniog (modern-day Breconshire). This church is reputed to be sited on the spot where Tybie was killed by Saxon raiders.