In Arthur's day and before that, the people of South Wales regarded North Wales as pre-eminently the land of faerie. In the popular imagination, that distant country was the chosen abode of giants, monsters, magicians, and all the creatures of enchantment. Out of it came the fairies, on their visits to the sunny land of the south. The chief philosopher of that enchanted region was a giant who sat on a mountain peak and watched the stars. It had a wizard monarch called Gwydion, who possessed the power of changing himself into the strangest possible forms. The peasant who dwelt on the shores of Dyfed (Demetia) saw in the distance, beyond the blue waves of the ocean, shadowy mountain summits piercing the clouds, and guarding this mystic region in solemn majesty. Thence rolled down upon him the storm-clouds from the home of the tempest; thence streamed up the winter sky the flaming banners of the Northern lights; thence rose through the illimitable darkness on high, the star-strewn pathway of the fairy king. These details are current in the Mabinogion, those brilliant stories of Welsh enchantment, so gracefully done into English by Lady Charlotte Guest,[4] and it is believed that all the Mabinogion in which these details were found were written in Dyfed. This was the region on the west, now covered by Pembroke, Carmarthen, and Cardigan shires.