Location and coordinates are for the approximate centre of Penmon within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Penmon, coast par., Anglesey, on NE. side and partly in bor. of Beaumaris, 1052 ac. land and 6128 water, pop. 242; contains the ruins of Penmon Priory (6th century).