Porthmadog Urban District
Known as Ynyscynhaiarn Urban District (1894-1915), and Porthmadog UD (1915–74). In the county of Caernarfonshire from 1894 to 1974 and absorbed into Dwyfor.
Known as Ynyscynhaiarn Urban District (1894-1915), and Porthmadog UD (1915–74). In the county of Caernarfonshire from 1894 to 1974 and absorbed into Dwyfor.