From Wirt Sikes’s ‘British Goblins’ (1880):
The ‘Herald Cymraeg’ [newspaper] of September 25, 1874, gave an account of some excavations made at Pant-y-Saer cromlech, Anglesea, by the instigation of John Jones of Llandudno, ‘a brother of Isaac Jones, the present tenant of Pant-y-Saer’, at the time on a visit to the latter. The immediately exciting cause of the digging was a dream in which the dreamer was told that there was a pot of treasure buried within the cromlech’s precincts. The result was the revelation of a large number of human bones, among them five lower jaws with the teeth sound; but no crochan aur (pitcher of gold) turned up, and the digging was abandoned in disgust.