Location and coordinates are for the approximate centre of Llanllyfni within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Llanllyfni, par. and vil., on river Llyfni, in co. and 7 miles S. of Carnarvon, 7521 ac., pop. 5520; P.O.; has slate quarries and copper mines; the parish includes the SW. part of Snowdonia.