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In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Porthdinlleyn like this:
PORTHDYNLLAEN, or Porthdinlleyn, a villagein the S W of Carnarvon; on a small sheltered bay of itsown name, on the W side of the Lleyn peninsnla, 2 miles W of Nevin. See Nevin.
Porthdinlleyn is now part of GWYNEDD District. Click here for graphs and data of how GWYNEDD has changed over two centuries. For statistics about Porthdinlleyn itself, go to Statistics.
How to reference this page:
GB Historical GIS / University of Portsmouth, History of Porthdinlleyn, in Gwynedd and Caernarvonshire | Map and description, A Vision of Britain through Time.
URL: https://www.visionofbritain.org.uk/place/26418
Date accessed: 08th April 2026
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Porthdinlleyn".