Who, then, was this bloodthirsty deity? His name, _Cromm Cruaich_, means the “Bowed One of the Mound”, and was evidently applied to him only after his fall from godhead. It relates to the tradition that, at the approach of the all-conquering Saint Patrick, the “demon” fled from his golden image, which thereupon sank forward in the earth in homage to the power that had come to supersede it.[47] But from another source we glean that the word _cromm_ was a kind of pun upon _cenn_, and that the real title of the “king idol of Erin” was _Cenn Cruaich_, “Head” or “Lord” of the Mound. Professor Rhys, in his _Celtic Heathendom_,[48] suggests that he was probably the Gaelic heaven-god, worshipped, like the Hellenic Zeus, upon “high places”, natural or artificial. At any rate, we may see in him the god most revered by the Gaels, surrounded by the other twelve chief members of their Pantheon. It would appear probable that the Celtic State worship was what is called “solar”. All its chief festivals related to points in the sun’s progress, the equinoxes having been considered more important than the solstices. It was at the spring equinox (called by the Celts “Beltaine”[49]) in every nineteenth year that, we learn from Diodorus the Sicilian, a writer contemporary with Julius Caesar, Apollo himself appeared to his worshippers, and was seen harping and dancing in the sky until the rising of the Pleiades.[50] The other corresponding festival was “Samhain”[51], the autumn equinox. As Beltaine marked the beginning of summer, so Samhain recorded its end. The summer solstice was also a great Celtic feast. It was held at the beginning of August in honour of the god called Lugus by the Gauls, Lugh by the Gaels, and Lleu by the Britons—the pan-Celtic Apollo, and, probably, when the cult of the war-god had fallen from its early prominence, the chief figure of the common Pantheon. It was doubtless at Stonehenge that the British Apollo was thus seen harping and dancing. That marvellous structure well corresponds to Diodorus’s description of a “magnificent temple of Apollo” which he locates “in the centre of Britain”. “It is a circular enclosure,” he says, “adorned with votive offerings and tablets with Greek inscriptions suspended by travellers upon the walls. The rulers of the temple and city are called ‘Boreadæ’[52], and they take up the government from each other according to the order of their tribes. The citizens are given up to music, harping and chanting in honour of the sun.”[53] Stonehenge, therefore, was a sacred religious centre, equally revered by and equally belonging to all the British tribes—a Rome or Jerusalem of our ancient paganism.