Other current and historical names
Location and coordinates are for the approximate centre of Mynyddislwyn within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Mynydd-y-slwyn, par. and vil., Monmouthshire - par. (partly in town of Risca, and containing Abercarne), 16,077ac., pop. 8827; the vil. is 2 ½ miles SE. of Tredegar Junction and 9 ½ miles NW. of Newport; has chemical works, iron and tinplate works, and collieries.