treffynnon (welsh: "tref" - town + "ffynnon" - spring, well) is a hamlet of about twenty houses located between st.davids and fishguard, about a mile inland from the a487 at croesgoch in pembrokeshire. on the edge of the village stands treffynnon chapel, a welsh calvinistic methodist foundation, originally built in 1867 and rebuilt in 1876. treffynnon has only one named road with the unusual address of council houses, a row of six local authority dwellings dating from the 1960s known locally as the street.