Llandovery is a small market town in the east part of Carmarthenshire. Its Welsh name is Llanymddyfri, which means "The Church Amidst the Waters." This is indeed true - on one side of the valley floor is Afon Tywi and on the other is Afon Bran.

Running through the centre of the town itself is Y-Bawddwr and the fourth river is Afon Gwydderig.