St. Margaret’s church in the village of Eglwyscummin comes from the twelfth or thirteenth century, although the round shape of the cemetery may indicate that the original temple was formed much earlier. It is believed that it was founded by Saint Cynin, a missionary staying in these areas in the 5th century, which in turn the found tombstone of this period testifies. At the beginning of the 18th century, the church was already ruined. The first major repairs and reconstruction of the chancel were carried out in the second half of the 19th century and then at the beginning of the 20th century.
The building consists of a rectangular four-span nave, a narrower and shorter, three-span chancel on the plan of a rectangle and a porch adjacent to the southern wall of the nave. The western part of the nave is wider than the rest and probably comes from the twelfth century. The building was extended to the east in the thirteenth century, when the chancel was added. The vault of the nave is dated back to the 14th century, then in order to equalize nave and chancel, the inside of the northern wall was thickened and a new entrance on the southern side was pierced along with the porch protecting it.
Website britishlistedbuildings.co.uk, Church of St Margaret Marloes, A Grade I Listed Building in Eglwyscummin (Eglwys Gymyn), Carmarthenshire.
Website coflein.gov.uk, St Margaret’s church; St Cyffig’c church, Eglwyscummin.