- source: Getty Thesaurus of Geographic Names
- source: Family History Library Catalog
- the text in this section is copied from an article in Wikipedia
Nefyn is a small town and community on the north west coast of the Llŷn Peninsula in Gwynedd, Wales. Historically in Caernarfonshire, it has a population of 2,602.
Welsh is the first language of almost 73% of its inhabitants. The A497 road terminates in the town centre. The community includes Edern.