Location and coordinates are for the approximate centre of Penmachno within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Penmachno, par. and vil., Carnarvonshire, in E. of co.- par., 11,208 ac., pop. 1787; vil., on river Machno, 64 miles S. of Llanrwst; P.O.