Location and coordinates are for the approximate centre of Gwenddwr within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Gwenddwr, par. and township, NE. Brecknockshire, 5½ miles SE. of Builth -- par., 8262 ac., pop. 413; township, 7381 ac., pop. 369.