The great towans, or sand dunes, of Penhale extend three miles in length, and almost two in parts inland. They are held in check to the north and north-east by the little stream that finds its way into Holywell Bay. In these sands was found S. Piran's Chapel, of the eighth or ninth century, in 1835, exactly resembling similar structures of the same date in Ireland. It was cleared out by Mr. William Mitchell, of Comprigney, near Truro, and he thus describes it:--

"The church, which is built nearly east and west, inclining only 4° north of west, is of but small dimensions, the length without the walls being 30 feet and within the walls 25 feet; the width within 13 feet in the chancel and 12 feet in the nave, and the height about 13 feet. There is a very neat arched doorway in a good state of preservation at the date of the work, viz. the day when I removed the sand from it, 7 ft. 4 in. by 2 ft. 4 in., ornamented with Saxon tracery [this is inaccurate, no Saxon about it], the arch itself having on its keystone the head of a tiger, and the points of its curve (i.e. label-terminations) the head of a man and that of a woman, rudely sculptured in stone, in the centre of the nave on the south wall; and another doorway in the north-east corner, near the altar, of similar dimensions and style, if we may judge from the remains of its arch lying near it, and which may be assumed to be that intended for the priest himself, leading into the chancel. The chancel is exactly 9-1/2 feet long, and shows in the north and south walls the precise spots where the railing (screen) separating it from the nave was fixed. Attached to the eastern wall of the church is an altar nearly equidistant between the north and south walls, 5 ft. 3 in. long by 2 ft. 3 in. wide, and 4 feet high, built of stone and neatly plastered with lime. Eight inches above this altar is a recess or niche about 12 inches high by 8 inches wide, in which, undoubtedly, was once S. Piran's shrine.... There is only one small aperture or window, 12 inches high by 10 inches wide, about 10 feet above the floor, in the south wall of the chancel.... A stone seat, raised 14 inches above the level of the floor, and 12 inches wide, covered with lime-plaster, runs all round the walls except the east and south walls of the chancel. The nave is exactly 15-1/2 feet long, its floor, together with the floor of the chancel, being composed of lime and sand, apparently as perfect as when first laid down. Each door has two low steps to descend into the church. The church itself is plastered with beautiful white lime. The masonry of the entire building is of the rudest kind, and evidently of very remote antiquity. There is not the slightest attempt at regular courses, but the stones, consisting of granite, quartz, sandstone, porphyry, etc., appear to have been thrown together almost at random--horizontally, perpendicularly, and at every angle of inclination--just as the hand, not the eye, of the workman happened to direct him. To render the church as perfect as when it was originally erected, nothing seemed wanting but its doors and roof. Not an atom of wood, except a piece of about 8 inches long by 2 inches wide, and an inch thick, was found within the walls. That there were many bodies interred both in the chancel and nave of the church is an unquestionable fact. Several skeletons have been found deposited about 2 feet below the floor. Three were discovered with their feet lying under the altar, one of them of gigantic dimensions, measuring about 7 ft. 6 in.... Their heads, which appeared to be almost cemented together, lay between the knees of the skeleton deposited nearest to the south wall.

"On the southern and western sides of this venerable ruin is the ancient burying-ground, strewed over tens of thousands of human bones and teeth as white as snow; and, strange as it may seem, the showers of sand which fall all around hardly ever remain on these melancholy relics of mortality."[[20]]

Unhappily nothing was done to preserve this little church after it had been excavated from the sand. The three heads from the doorway were carried off for Truro Museum; visitors pulled out stones, boys tore down the walls, and now little more than a gable remains. But to this was added the mischievous meddlesomeness of the curate-in-charge, the Rev. William Haslam, who turned the altar-stones about, as he had got a theory into his head that they had formed a tomb, and rebuilt them in this fashion, pointing east and west, and cut upon the altar-slab the words "S. Piranus." It is purposed to undo Mr. Haslam's work, and replace the altar as originally found. More should be done. Cement should be run along the top of such wall as remains to save it from falling.

The Rev. C. Collins Trelawny, soon after the discovery, wrote an account in a book entitled Perranzabulo, the Lost Church Found, which went through seven editions (1837-72).

In 1844 Mr. Haslam published another book on the subject, and again another in 1888, From Death unto Life, in which he assumed to himself the credit of Mr. Mitchell's discovery. The church has not the extreme antiquity attributed to it. The fact of there being a chancel is sufficient evidence that it does not belong to the sixth century, as none of the earliest Irish churches possess this feature.[[21]] It is about two centuries later, though doubtless a reconstruction of the old materials, and perhaps on the old lines. Judging from Irish examples, in one point only is Mr. Haslam more correct than Mr. Mitchell. He considered the niche over the altar to have been a walled-up window, and in this was right.

The story of S. Piran, or Kieran, as he is called in Ireland, is of sufficient interest to be given.

He was born in Clear Island, in the county of Cork, the extreme south point of Ireland. He established a monastery at Saighir, in the extreme north of Munster. The legend is that his first disciples were a boar, a fox, a badger, a wolf, and a doe. And in this we have an instance of the manner in which simple facts assume a fabulous character in the hands of late writers. The district was that of the clan of Hy Sinnach, i.e. the foxes; an adjoining tribe was that of the Hy Broc, or the badgers; an Ossorian disciple was regarded as Os, i.e. a doe; and his wolf was no other than one of the Hy Faeladh, which has a double meaning of "hospitable" or "wolfish;" another disciple was S. Tore, and the name means "boar."

Kieran, as his name is in Irish, invoked the assistance of his mother, Liadhain, and induced her to start a school for girls at Kellyon, not far from Saighir. The arrangement was not happy, as at least one of his disciples carried on a lively flirtation with Liadhain's damsels.

How Kieran placed Buriena the Slender with Liadhain, and how a chief ran away with her, and how Kieran got her back, shall be told when we come to Land's End. It was possibly on account of this unpleasantness that he withdrew to Cornwall, and brought with him both his nurse, Cocca, and Buriena. But there were other reasons. Kieran belonged to the royal race of Ossory, and in his time Ossory was overrun by Cucraidh, who massacred all he could lay hands on of the royal race of the O'Bairrche, to which Kieran belonged. Most of Kieran's clan migrated to the north of Ossory, where they maintained their independence till 642. It was not likely that Kieran cared to remain in the country under an usurper whose hands were steeped in the blood of his brethren. Cucraidh tried to make terms with the saint, and his granddaughter was either put under his rule, or else voluntarily entrusted herself to him. But even if Cucraidh invited Kieran to remain, he was but under-king to Aengus, King of Munster, and Kieran quarrelled with the latter and denounced him to death. In fact, Aengus was killed in battle in 489. There was consequently very good reason why the saint should leave Ireland.