Ardudwy was a commote (cwmwd) in medieval Wales. It can be seen on the map of the cymydau in the bookmark for page 3, on the northern coast of Cardigan Bay. It was divided into upper and lower regions, called Uwch Artro and Is Artro.
Harlech, situated in present-day Gwynedd, is a coastal town that has played a significant part in Welsh history. It is the site of an imposing 13th century castle built by Edward I following his conquest of Wales, and it was briefly occupied by Owain Glyndŵr during the 15th century Welsh uprising.