The history of this people during the time when they were the dominant power in Mid-Europe has to be divined or reconstructed from scattered references, and from accounts of episodes in their dealings with Greece and Rome, very much as the figure of a primæval monster is reconstructed by the zoologist from a few fossilised bones. No chronicles of their own have come down to us, no architectural remains have survived; a few coins, and a few ornaments and weapons in bronze decorated with enamel or with subtle and beautiful designs in chased or repoussé work—these, and the names which often cling in strangely altered forms to the places where they dwelt, from the Euxine to the British Islands, are well-nigh all the visible traces which this once mighty power has left us of its civilisation and dominion. Yet from these, and from the accounts of classical writers, much can be deduced with certainty, and much more can be conjectured with a very fair measure of probability. The great Celtic scholar whose loss we have recently had to deplore, M. d'Arbois de Jubainville, has, on the available data, drawn a convincing outline of Celtic history for the period prior to their emergence into full historical light with the conquests of Cæsar,3 and it is this outline of which the main features are reproduced here.
The True Celtic Race
To begin with, we must dismiss the idea that Celtica was ever inhabited by a single pure and homogeneous race. The true Celts, if we accept on this point the carefully studied and elaborately argued conclusion of Dr. T. Rice Holmes,4 supported by the unanimous voice of antiquity, were a tall, fair race, warlike and masterful,5 whose place of origin (as far as we can trace them) was somewhere about the sources of the Danube, and who spread their dominion both by conquest and by peaceful infiltration over Mid-Europe, Gaul, Spain, and the British Islands. They did not exterminate the original prehistoric inhabitants of these regions—palæolithic and neolithic races, dolmen-builders and workers in bronze—but they imposed on them their language, their arts, and their traditions, taking, no doubt, a good deal from them in return, especially, as we shall see, in the important matter of religion. Among these races the true Celts formed an aristocratic and ruling caste. In that capacity they stood, alike in Gaul, in Spain, in Britain, and in Ireland, in the forefront or armed opposition to foreign invasion. They bore the worst brunt of war, of confiscations, and of banishment. They never lacked valour, but they were not strong enough or united enough to prevail, and they perished in far greater proportion than the earlier populations whom they had themselves subjugated. But they disappeared also by mingling their blood with these inhabitants, whom they impregnated with many of their own noble and virile qualities. Hence it comes that the characteristics of the peoples called Celtic in the present day, and who carry on the Celtic tradition and language, are in some respects so different from those of the Celts of classical history and the Celts who produced the literature and art of ancient Ireland, and in others so strikingly similar. To take a physical characteristic alone, the more Celtic districts of the British Islands are at present marked by darkness of complexion, hair, &c. They are not very dark, but they are darker than the rest of the kingdom.6 But the true Celts were certainly fair. Even the Irish Celts of the twelfth century are described by Giraldus Cambrensis as a fair race.
Golden Age of the Celts
But we are anticipating, and must return to the period of the origins of Celtic history. As astronomers have discerned the existence of an unknown planet by the perturbations which it has caused in the courses of those already under direct observation, so we can discern in the fifth and fourth centuries before Christ the presence of a great power and of mighty movements going on behind a veil which will never be lifted now. This was the Golden Age of Celtdom in Continental Europe. During this period the Celts waged three great and successful wars, which had no little influence on the course of South European history. About 500 B.C. they conquered Spain from the Carthaginians. A century later we find them engaged in the conquest of Northern Italy from the Etruscans. They settled in large numbers in the territory afterwards known as Cisalpine Gaul, where many names, such as Mediolanum (Milan), Addua (Adda), Viro-dunum (Verduno), and perhaps Cremona (creamh, garlic),7 testify still to their occupation. They left a greater memorial in the chief of Latin poets, whose name, Vergil, appears to bear evidence of his Celtic ancestry.8 Towards the end of the fourth century they overran Pannonia, conquering the Illyrians.
Alliances with the Greeks
All these wars were undertaken in alliance with the Greeks, with whom the Celts were at this period on the friendliest terms. By the war with the Carthaginians the monopoly held by that people of the trade in tin with Britain and in silver with the miners of Spain was broken down, and the overland route across France to Britain, for the sake of which the Phocæans had in 600 B.C. created the port of Marseilles, was definitely secured to Greek trade. Greeks and Celts were at this period allied against Phœnicians and Persians. The defeat of Hamilcar by Gelon at Himera, in Sicily, took place in the same year as that of Xerxes at Salamis. The Carthaginian army in that expedition was made up of mercenaries from half a dozen different nations, but not a Celt is found in the Carthaginian ranks, and Celtic hostility must have counted for much in preventing the Carthaginians from lending help to the Persians for the overthrow of their common enemy. These facts show that Celtica played no small part in preserving the Greek type of civilisation from being overwhelmed by the despotisms of the East, and thus in keeping alive in Europe the priceless seed of freedom and humane culture.
Alexander the Great
When the counter-movement of Hellas against the East began under Alexander the Great we find the Celts again appearing as a factor of importance. In the fourth century Macedon was attacked and almost obliterated by Thracian and Illyrian hordes. King Amyntas II. was defeated and driven into exile. His son Perdiccas II. was killed in battle. When Philip, a younger brother of Perdiccas, came to the obscure and tottering throne which he and his successors were to make the seat of a great empire he was powerfully aided in making head against the Illyrians by the conquests of the Celts in the valleys of the Danube and the Po. The alliance was continued, and rendered, perhaps, more formal in the days of Alexander. When about to undertake his conquest of Asia (334 B.C.) Alexander first made a compact with the Celts “who dwelt by the Ionian Gulf” in order to secure his Greek dominions from attack during his absence. The episode is related by Ptolemy Soter in his history of the wars of Alexander.9 It has a vividness which stamps it as a bit of authentic history, and another singular testimony to the truth of the narrative has been brought to light by de Jubainville. As the Celtic envoys, who are described as men of haughty bearing and great stature, their mission concluded, were drinking with the king, he asked them, it is said, what was the thing they, the Celts, most feared. The envoys replied: “We fear no man: there is but one thing that we fear, namely, that the sky should fall on us; but we regard nothing so much as the friendship of a man such as thou.” Alexander bade them farewell, and, turning to his nobles, whispered: “What a vainglorious people are these Celts!” Yet the answer, for all its Celtic bravura and flourish, was not without both dignity and courtesy. The reference to the falling of the sky seems to give a glimpse of some primitive belief or myth of which it is no longer possible to discover the meaning.10 The national oath by which the Celts bound themselves to the observance of their covenant with Alexander is remarkable. “If we observe not this engagement,” they said, “may the sky fall on us and crush us, may the earth gape and swallow us up, may the sea burst out and overwhelm us.” De Jubainville draws attention most appositely to a passage from the “Táin Bo Cuailgne,” in the Book of Leinster11, where the Ulster heroes declare to their king, who wished to leave them in battle in order to meet an attack in another part of the field: “Heaven is above us, and earth beneath us, and the sea is round about us. Unless the sky shall fall with its showers of stars on the ground where we are camped, or unless the earth shall be rent by an earthquake, or unless the waves of the blue sea come over the forests of the living world, we shall not give ground.”12 This survival of a peculiar oath-formula for more than a thousand years, and its reappearance, after being first heard of among the Celts of Mid-Europe,