To this I may append a reference to the Geninen for 1896, p. 84, where Mr. Lleufer Thomas, who is also a native of the district, alludes to the local belief that Owen Lawgoch and his men are asleep, as already mentioned, in the cave of Pant y Llyn, and that they are to go on sleeping there till a trumpet blast and the clash of arms on Rhiw Goch rouse them to sally forth to combat the Saxons and to conquer, as set forth by Howells: see p. 381 above. It is needless to say that there is no reason, as will be seen presently, to suppose Owen Lawgoch to have ever been near any of the caves to which allusion has here been made; but that does not appreciably detract from the fascination of the legend which has gathered round his personality; and in passing I may be allowed to express my surprise that in such stories as these the earlier Owen has not been eclipsed by Owen Glyndwr: there must be some historical reason why that has not taken place. Can it be that a habit of caution made Welshmen speak of Owen Lawgoch when the other Owen was really meant?
The passage I have cited from Mr. Fisher's letter raises the question of a dinas in Carnarvonshire, which that of his native parish recalled to his mind; and this is to be considered next. Doubtless he meant Dinas Emrys formerly called Din Emreis [57], 'the Fortress of Ambrosius,' situated near Bedgelert, and known in the neighbourhood simply as y Dinas, 'the Fort.' It is celebrated in the Vortigern legend as the place where the dragons had been hidden, that frustrated the building of that king's castle; and the spot is described in Lewis' Topographical Dictionary of Wales, in the article on Bethgelart (Bed-Celert), as an isolated rocky eminence with an extensive top area, which is defended by walls of loose stones, and accessible only on one side. He adds that the entrance appears to have been guarded by two towers, and that within the enclosed area are the foundations of circular buildings of loose stones forming walls of about five feet in thickness. Concerning that Dinas we read in the Brython for 1861, p. 329, a legend to the following effect:--Now after the departure of Vortigern, Myrdin, or Merlin as he is called in English, remained himself in the Dinas for a long time, until, in fact, he went away with Emrys Ben-aur, 'Ambrosius the Gold-headed'--evidently Aurelius Ambrosius is meant. When he was about to set out with the latter, he put all his treasure and wealth into a crochan aur, 'a gold cauldron,' and hid it in a cave in the Dinas, and on the mouth of the cave he rolled a huge stone, which he covered up with earth and sods, so that it was impossible for any one to find it. He intended this wealth to be the property of some special person in a future generation, and it is said that the heir to it is to be a youth with yellow hair and blue eyes. When that one comes near to the Dinas a bell will ring to invite him to the cave, which will open of itself as soon as his foot touches it. Now the fact that some such legend was once currently believed about Bedgelert and Nanhwynain is proved by the curious stories as to various attempts made to find the treasure, and the thunderstorms and portents which used to vanquish the local greed for gold. For several instances in point see the Brython, pp. 329-30; and for others, showing how hidden treasure is carefully reserved for the right sort of heir, see p. 148 above. To prove how widely this idea prevailed in Carnarvonshire, I may add a short story which Mrs. Williams-Ellis of Glasfryn got from the engineer who told her of the sacred eel of Llangybi (p. 366):--There was on Pentyrch, the hill above Llangybi, he said, a large stone so heavy and fixed so fast in the ground that no horses, no men could move it: it had often been tried. One day, however, a little girl happened to be playing by the stone, and at the touch of her little hand the stone moved. A hoard of coins was found under it, and that at a time when the little girl's parents happened to be in dire need of it. Search had long been made by undeserving men for treasure supposed to be hidden at that spot; but it was always unsuccessful until the right person touched the stone to move. The failure of the wrong person to secure the treasure, even when discovered, is illustrated by a story given by Mr. Derfel Hughes in his Antiquities of Llandegai and Llanllechid, pp. 35-6, to the effect that a servant man, somewhere up among the mountains near Ogwen Lake, chanced to come across the mouth of a cave with abundance of vessels of brass (pres) of every shape and description within it. He went at once and seized one of them, but, alas! it was too heavy for him to stir it.