"A parochial chapelry, in the Union of Llanrwst, hundred of Isaled, county of Denbigh; 14 miles (SW) from Denbigh, containing 611 inhabitants. This chapelry is situated in the western part of the county, on the right bank of the river Conway, ..... and comprises a portion of the most mountainous and sterile moorlands of the district, together with some boggy patches; and wood, the prevailing timber being larch. Barley and oats are the principal produce. ..... The village consists of only thirteen houses. An excellent road has been constructed from this place to Denbigh, across the mountains. ..... The female inhabitants are chiefly employed in the spinning of woollen yarn, and the knitting of stockings, and the males in attendance upon their herds and flocks."
[ A Topographical Dictionary of Wales, 1833 & 1849, Samuel Lewis]
Pentrefoelas was originally part of the parish of Llannefydd. It became a separate parish in November 1810.