Edernion

Edernion is one of the hundreds of Merionethshire, forming the distinctive projection into Denbighshire on the east of the county. It is bounded to the north-west, north and east by Denbighshire; to the south by Montgomeryshire; and to the west by Penllyn Hundred. Edernion is the least populous of the hundreds, with a population of 4,173 in 2011.

It comprises the ancient parishes of:

• Betws Gwerfil Goch (part)^*
• Corwen
• Gwyddelwern
• Llangar
• Llandrillo-yn-Edeirnion
• Llanfihangel Glyn Myfyr (Cefn Post hamlet)^†
• Llansanffraid Glyndyfrdwy

^*: Extends into Denbighshire.
^†: Remainder in Denbighshire.