Letter from W.F. Irvine, Brynllwyn, Corwen to Ifor Williams He encloses a cutting from Yr Adsain. Asks whether "Rug" is derived from the old Welsh "cruc" meaning mound. The house first stood at the foot of a fine Burial mound. Dr Willoughby Gardner told him of a definite evidence of the mound-castle having been built on top of the prehistoric burial mound. Enclosed : Article from Yr Adsain entitled "Rug and its inhabitants 650 years ago" 1938 February 16