In 1887, John Bartholomew's Gazetteer of the British Isles described Caernarfon like this:
Carnarvon, or Caernarvon, co. town of Carnarvonshire, parl. and mun. bor., and seaport, at mouth of r. Seiont, 6½ miles SW. of Bangor and 241 miles NW. of London by rail, 1897 ac., pop. 10,258; 3 Banks, 5 newspapers. Market-day, Saturday. The town is pleasantly situated on the SE. shore of the Menai Strait, and is much frequented in the bathing season. The grand old castle, built by Edward I., is still almost entire. Some portions of the old walls of the town also remain. Slates and copper ore are exported. (For shipping statistics, see Appendix.) C. unites with Bangor, Conway, Criccieth, Nevin, and Pwllheli in returning 1 member to Parl.
A Vision of Britain through Time includes a large library of local statistics for administrative units. For the best overall sense of how the area containing Caernarfon has changed, please see our redistricted information for the modern district of Gwynedd. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Caernarfon and units named after it.
GB Historical GIS / University of Portsmouth, History of Caernarfon, in Gwynedd and Caernarvonshire | Map and description, A Vision of Britain through Time.
Date accessed: 22nd October 2016
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Caernarfon".