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Nennius tells us, what Gildas omits, the name of the British soldier who won the crowning mercy of Mount Badon, and that name takes us out of the mist of dimly remembered history into the daylight of romance. There looms, large, uncertain, dim but glittering, the legend of King Arthur and the Knights of the Round Table. Somewhere in the Island a great captain gathered the forces of Roman Britain and fought the barbarian invaders to the death. Around him, around his name and his deeds, shine all that romance and poetry can bestow. Twelve battles, all located in scenes untraceable, with foes unknown, except that they were heathen, are punctiliously set forth in the Latin of Nennius. Other authorities say, “No Arthur; at least, no proof of any Arthur.” It was only when Geoffrey of Monmouth six hundred years later was praising the splendours of feudalism and martial aristocracy that chivalry, honour, the Christian faith, knights in steel and ladies bewitching, are enshrined in a glorious circle lit by victory. Later these tales would be retold and embellished by the genius of Mallory, Spenser, and Tennyson. True or false, they have gained an immortal hold upon the thoughts of men. It is difficult to believe it was all an invention of a Welsh writer. If it was he must have been a marvellous inventor.
Modern research has not accepted the annihilation of Arthur. Timidly but resolutely the latest and best-informed writers unite to proclaim his reality. They cannot tell when in this dark period he lived, or where he held sway and fought his battles. They are ready to believe however that there was a great British warrior, who kept the light of civilisation burning against all the storms that beat, and that behind his sword there sheltered a faithful following of which the memory did not fail. All four groups of the Celtic tribes which dwelt in the tilted uplands of Britain cheered themselves with the Arthurian legend, and each claimed their own region as the scene of his exploits. From Cornwall to Cumberland a search for Arthur’s realm or sphere has been pursued.The reserve of modern assertions is sometimes pushed to extremes, in which the fear of being contradicted leads the writer to strip himself of almost all sense and meaning. One specimen of this method will suffice:
"It is reasonably certain that a petty chieftain named Arthur did exist, probably in South Wales. It is possible that he may have held some military command uniting the tribal forces of the Celtic or highland zone or part of it against raiders and invaders (not all of them necessarily Teutonic). It is also possible that he may have engaged in all or some of the battles attributed to him; on the other hand, this attribution may belong to a later date."
This is not much to show after so much toil and learning.
Nonetheless, to have established a basis of fact for the story of Arthur is a service which should be respected. In this account we prefer to believe that the story with which Geoffrey delighted the fiction-loving Europe of the twelfth century is not all fancy. If we could see exactly what happened we should find ourselves in the presence of a theme as well founded, as inspired, and as inalienable from the inheritance of mankind as the Odyssey or the Old Testament. It is all true, or it ought to be; and more and better besides. And wherever men are fighting against barbarism, tyranny, and massacre, for freedom, law, and honour, let them remember that the fame of their deeds, even though they themselves be exterminated, may perhaps be celebrated as long as the world rolls round. Let us then declare that King Arthur and his noble knights, guarding the Sacred Flame of Christianity and the theme of a world order, sustained by valour, physical strength, and good horses and armour, slaughtered innumerable hosts of foul barbarians and set decent folk an example for all time.
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Winston Churchill (A History of the English Speaking People ( Complete All 4 Volumes ) The Birth of Britain / The New World / The Age of Revolution / The Great Democracies)