Edeyrn and Porthdinllaen - on the Penllyn.com site
You can see pictures of Edern / Edeyrn which are provided by:
You can see the
administrative areas in which Edern / Edeyrn has been placed at times in the past. Select one to see a link to a map of that particular area.
Gwynedd Family History Society have a diagram of the ecclesiastical parishes of Caernarfonshire (under Parishes)
Edeyrn parish in the County of Carnarvon - on the People's Collection Wales site
You can see maps centred on OS grid reference SH274402 (Lat/Lon: 52.931229, -4.569625), Edern / Edeyrn which are provided by: