As Cork is the last large place that suffered greatly from the Danes that shall be mentioned in this work, it cannot be uninteresting or out of place to give an extract from the Earl of Dunraven's book on ancient Irish architecture about those terrible Vikings, and the causes that made them a terror to all the maritime nations of Europe for so many years, more especially as such an expensive work is not generally read, and not within reach of the masses: "Dense as is the obscurity in which the cause of the wanderings and ravages of the Scandinavian Vikings is enveloped, yet the result of the investigations hitherto made on the subject is, that they were, in a great measure, consequent on the conquests of Charlemagne in the north of Germany, and on the barrier which he thereby--as well as by the introduction of Christianity--set on their onward march. It can hardly be attributed to accident that, with the gradual strengthening of the Frankish dominions, the hordes of Northmen descended on the British Isles in ever-increasing numbers. The policy of Charlemagne in his invasion of Saxony, and the energy by which he succeeded in driving his enemies beyond the Elbe and the German Ocean, were manifestly intensified by religious zeal. The Saxons were still heathens; and the first attack made by the Frankish King was on the fortress of Eresbourg, where stood the temple of Irminsul, the great idol of the nation. We read that he laid waste their temples and broke their idols to pieces.... However it may appear from ancient authorities that for some centuries before then, the Scandinavians had occasionally infested the southern shores of Europe; yet in the added light that is cast by the Irish annals on the subject, we perceive that from this date their piratical incursions afford evidence not before met with of preconcerted plan and incessant energy; and these events in the reign of Charles may lead us to discover what was the strong impulse that thus tended, in some measure, to condense and concentrate their desultory warfare. Impelled by some strong, overmastering passion, these hordes of northern warriors held on from year to year their avenging march; and such was the fury of their arms that even now, after the lapse of a thousand years, their deeds are in appalling remembrance throughout Europe, not only in every city on the sea-shore, or on river, but even in the peasant traditions of the smallest village."