Location and coordinates are for the approximate centre of Llansadwrn within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Llansadwrn, par. and vil., in E. of Carmarthenshire - par., 7064 ac., pop. 944; vil., 2½ miles NW. of Llangadock sta. and 5¼ miles SW. of Llandovery; P.O.