If, however, the material proofs are deficient, the written evidence is clearer and more satisfactory than with regard to any group of tombs in the three kingdoms. In the passage above quoted, it is said "that they"—the kings of Ireland—"were interred at Brugh from the time of Crimthann (A.D. 76) to the time of Leoghaire, the son of Niall (A.D. 458), except three persons, namely, Art the son of Conn, and Cormac the son of Art, and Niall of the nine hostages,"—the father of Leoghaire. The reason given why Art and Cormac were not buried here was that they had embraced Christianity. Art was buried at a place called Treoit; Cormac on the right bank of the Boyne at a place called Ros-na-righ, opposite Brugh; and Niall at Ochaim. But having disposed of these three, we have still some twenty-seven kings to find graves for, and only seventeen mounds can now be traced at Brugh; and, besides these, we have to find the tombs of the Dagdha, and his three sons, and Etan the poetess and her son Corpre, and Boinn, the wife of Nechtan, "who took with her to the tomb her small hound Dabilla," and a vast number of nobles of Tuatha de Danann and others. It is impossible to find places for all these persons in the graves now visible, if each was buried separately. It may be, however, that the great mounds contained several sepulchres. The form and position of the chambers at Dowth ([woodcut No. 69]) perhaps countenances such a supposition; but many may have been buried under smaller cairns, long since removed to make way for agricultural improvements, and many may yet be discovered if the place be carefully and systematically explored, which does not yet seem to have been done. Before, however, anything like certainty could be arrived at as to the distribution of these graves, it would be necessary that the great mounds should be thoroughly explored, and this, from the nature of their material, will practically involve their destruction, which would be very much to be regretted. Meanwhile, if I may be allowed to offer a conjecture, I would say that New Grange might be the "Cumot or Commensurate grave of Cairbre Lifeachair." He, according to the Four Masters, reigned from 271 to 288—but probably fifty or sixty years later—and seems to have been a king deserving of a right royal sepulchre; and I feel great confidence that the unopened tumulus near the river may be what tradition says it is—the grave of the Great Dagdha, the hero of Moytura. With regard to the others, it would not be safe to hazard any opinion in the present state of our knowledge. For the present it is sufficient to feel sure that we have a group of monuments all, or very nearly all of which were erected in the first four centuries of the Christian era, and from this basis we may reason with tolerable certainty regarding the other groups which we may meet with in the course of this enquiry.
Lough Crew.
At a distance of twenty-five miles nearly due west from Brugh na Boinn, and two miles south-east from Oldcastle, is a range of hills, called on the Ordnance map Slieve na Calliagh—the hags' or witches' hill. It is upwards of 200 feet above the level of the sea, and the most conspicuous elevation in that part of the country. On the ridge of this range, which is about two miles in extent, are situated from twenty-five to thirty cairns, some of considerable size, being 120 to 180 feet in diameter; others are much smaller, and some so nearly obliterated that their dimensions can hardly be now ascertained. Till seven or eight years ago this cemetery was entirely unknown to Irish antiquaries, and the positions of the cairns were hardly even indicated in the Ordnance Survey; but in 1863 they attracted the attention of Mr. Eugene Conwell, of Trim. In the years 1867-8 he was enabled, with the assistance and co-operation of the late Mr. Naper, of Lough Crew, the proprietor of the soil, to excavate and explore the whole of them. A brief account of the results which he obtained was submitted to the Royal Irish Academy in 1868, and afterwards printed by him for private circulation in 1868; but the greater work, with plans and drawings, in which he intends fully to illustrate the whole, is still in abeyance, owing to want of encouragement. When completed it will be one of the most valuable contributions to our archæological knowledge that we have received of late years. Meanwhile the following meagre particulars are derived from Mr Conwell's pamphlet and the information I picked up during a personal visit which I made to the spot in his company in the Autumn of last year. The illustrations are all from his drawings.
72. Cairn T, at Lough Crew.—From a plan by E. Conwell.
One of the most perfect of these tumuli is that distinguished by Mr. Conwell as Cairn T ([woodcut No. 72]). It stands on the highest point of the hill, and is consequently the most conspicuous. It is a truncated cone, 116 feet in diameter at base, and with a sloping side, between 60 and 70 feet in length. Around its base are thirty-seven stones, laid on edge, and varying from 6 to 12 feet in length. They are not detached, as at New Grange, but form a retaining wall to the mound. On the north, and set about 4 feet back from the circle, is a large stone, 10 feet long by 6 high, and 2 feet thick, weighing consequently above 10 tons. The upper part is fashioned as a rude seat, from which it derives its name of the Hag's Chair ([woodcut No. 73]), and there can be little doubt but that it was intended as a seat or throne; but whether by the king who erected the sepulchre, or for what purpose, it is difficult now to say.
73. The Hag's Chair, Lough Crew.—From a drawing by E. Conwell.