The country for some distance west of Penmon is commanded by Tin Sylwy or Bwrdd Arthur as it is also called. It rises 500 feet above the sea and is crowned by a fortification. The wall is of stone unset in mortar, faced within and without with slabs set on end, and within the area are faint traces of _cytiau_ or circular huts of stone, such as are traditionally attributed to the Irish. Some excavations have been made here, but not on an extensive scale, and Roman coins and Samian ware have been found; but the extant walling assuredly belongs to the Gwyddyl invasion and occupation. Below the camp, between it and the church of Llanfihangel, is a holy well. In the graveyard may be noticed a token of a change of feeling towards the Welsh tongue. To the date 1860, or thereabouts, the inscriptions on the tombstones are in English, after that date in Welsh. There is nothing in the church of Llaniestyn but the very curious carved slab with a full-length figure of the saint who founded the church. One very similar and of the same period, the reign of Edward III., is in Llanbabo Church. Iestyn was a son of Geraint, the heroic king of Devon and Cornwall, who fell at Langport, in Somersetshire, fighting against invaders, about the year 522. Iestyn was buried here. He seems to have travelled, and it is probably of him that a pretty story is told. [Illustration: HOLY WELL, PENMON] He had gone to Brittany, and had found a deserted habitation at Plestin, of which he took possession. The hut had been constructed by an Irish settler named Efflam, who had departed on a pilgrimage. On his return Efflam found his cell in the occupation of a stranger. The question arose as to which should have it. This they decided to determine in the following manner. Both seated themselves in the cabin. The day was overcast, but the clouds were breaking, and the sun was nearing its setting. He on whom it first shone should retain the hovel. Presently the clouds parted, and a golden ray shot in through the little window and blazed on Efflam’s upturned face. Then Iestyn rose, bowed, and withdrew, and ended his days in Mona. It is by an artist’s licence that on the monument Iestyn is represented wearing a crown. He was, indeed, a king’s son, but he never bore the royal circlet. The somewhat similar monument is at Llanbabo, in the north-west of the island. Pabo, after long and stubborn fighting against the Picts in North Britain, was driven to take refuge in Wales, and was kindly received by the prince of Powys. He bears the title of “The Pillar of Britain.” On the north coast is Pentraeth, at the head of Red Wharf Bay, and here may be seen the Three Leaps, by which hangs a tale.