Returning towards Llangollen by the old road near Chirk Castle, called Oswestry way, the Berwyn Mountains begin to raise their lofty summits. {25} These Mountains occupy the eastern side of Merionethshire, and branch into the counties of Denbigh and Montgomery. Their southern boundary is the river Tannant; their northern the Dee. Their length from north to south is about sixteen miles; their breadth from east to west varying from five to ten miles. {26a} Their highest tops are Cader Fronwen, or the Whitebreast, and Cader Ferwyn. On the summit of the former a large quantity of stones, collected from a distance, and brought here with much labour and difficulty, are cast round a stone pillar, marking the burial-place of some chief, whose very name is now forgotten. These Mountains, as I have before said, form the southern side of the vale of Llangollen; and forming a frontier barrier for this part of North Wales, they have been the scene of many a bloody contest, and on these hills the hardy sons of Cambria have successfully opposed the encroaching armies of their Saxon neighbours. I trust my readers will excuse me if I relate one of the most interesting events of that kind which took place on this part of the Berwyn Mountains, and within my prescribed limits. Henry II. King of England, being exasperated by the repeated predatory incursions of the Welch, {26b} and by the advantage they took of ravaging the English territories in his frequent absence, and finding that no treaties could bind them, resolved on his return from Normandy to lead an army against Wales; and having assembled a strong body of veteran troops, selected from all parts of his very extensive dominions in Normandy, Flanders, Anjou, Gascoine, and England, {27a} and hearing of some daring inroads made by the North Wales men, he early in the year 1165, put himself at the head of this chosen army, and set forward for North Wales, resolving to destroy without mercy every living thing he could meet with. Having advanced to Croesoswallt, now Oswestry, he encamped there, and sent forward a body of men to try the passes of the Dyke and Ceiriog, who being met near Castell Crogen, as has been before stated, were there defeated, and buried in the Dyke. It is probable that the victorious Welchmen were a party detached from the Welch army; for Owen Gwynedd, then Prince of Wales, having heard of the great preparations made by the King, had very prudently confederated all the power of the country, and had assembled his forces at Corwen, a very strong country in Edernion, and there awaited the King’s approach. He had with him, besides his brother Cadwalader, and all the power of North Wales, Prince Rhys, with those of South Wales, Owen Cyfeeliog and Madog Meredith, with the strength of Powis; in short, all the forces the Welch could muster. {27b}