Eifionydd

Eifionydd (Welsh pronunciation: [ɛiˈvjɔnɨð]) is an area in north-west Wales covering the south-eastern part of the Llŷn Peninsula from Porthmadog to just east of Pwllheli.

It traditionally took its name from Eifion, son of Dunod (who gave his name to the cantref) and grandson of Cunedda Wledig.

The chief centre of the commote was at Criccieth, although there may have been an earlier royal residence at Dolbenmaen.

It includes the villages of Chwilog, Abererch, Llanaelhaearn, Pencaenewydd, Llangybi, Llanystumdwy, Llanarmon, Rhoslan, Pentrefelin, Penmorfa, Garndolbenmaen, Bryncir and Pantglas.

John Edward Lloyd (1911) A history of Wales from the earliest times to the Edwardian conquest (Longmans, Green & Co, pages=238-239)