Though the Gentile power had experienced towards the close of the last reign such severe reverses, yet it was not in the nature of the men of Norway to abandon a prize which was once so nearly being their own. The fugitives who escaped, as well as those who remained within the strong ramparts of Waterford and Dublin, urged the fitting out of new expeditions, to avenge their slaughtered countrymen and prosecute the conquest. But defeat still followed on defeat; in the first year of Malachy, they lost 1,200 men in a disastrous action near Castle Dermot, with Olcobar the Prince-bishop of Cashel; and in the same or the next season they were defeated with the loss of 700 men, by Malachy, at Fore, in Meath. In the third year of Malachy, however, a new northern expedition arrived in 140 vessels, which, according to the average capacity of the long-ships of that age, must have carried with them from 7,000 to 10,000 men. Fortunately for the assailed, this fleet was composed of what they called _Black_-Gentiles, or Danes, as distinguished from their predecessors, the _Fair_-Gentiles, or Norwegians. A quarrel arose between the adventurers of the two nations as to the possession of the few remaining fortresses, especially of Dublin; and an engagement was fought along the Liffey, which "lasted for three days;" the Danes finally prevailed, driving the Norwegians from their stronghold, and cutting them off from their ships. The new Northern leaders are named Anlaf, or Olaf, Sitrick (Sigurd?) and Ivar; the first of the Danish Earls, who established themselves at Dublin, Waterford and Limerick respectively. Though the immediate result of the arrival of the great fleet of 847 relieved for the moment the worst apprehensions of the invaded, and enabled them to rally their means of defence, yet as Denmark had more than double the population of Norway, it brought them into direct collision with a more formidable power than that from which they had been so lately delivered. The tactics of both nations were the same. No sooner had they established themselves on the ruins of their predecessors in Dublin, than the Danish forces entered East-Meath, under the guidance of Kenneth, a local lord, and overran the ancient mensal, from the sea to the Shannon. One of their first exploits was burning alive 260 prisoners in the tower of Treoit, in the island of Lough Gower, near Dunshaughlin. The next year, his allies having withdrawn from the neighbourhood, Kenneth was taken by King Malachy's men, and the traitor himself drowned in a sack, in the little river Nanny, which divides the two baronies of Duleek. This death-penalty by drowning seems to have been one of the useful hints which the Irish picked up from their invaders.