In or about 830 a chief arrived who pursued a more ambitious policy. He is called Turgeis or Turgesius by the Irish, and by the Irish only: this may be a form of Thorkils or Trygve, and may perhaps be a name applied to the mysterious hero whom the Scandinavians call Ragnar Lodbrok. Turgesius landed in Ulster, and planned the complete subjugation of Ireland. He burned Armagh and drove out St. Patrick's successor, and then took up a central position near Athlone, whence his flotillas could act on Lough Ree and Lough Dearg. We know that the Northmen dragged ships or boats overland to Loch Lomond, and similar feats may have been performed in Ireland. There was another plundering station on Lough Neagh about the same time. Turgeis mastered the northern half of Ireland, and made frequent incursions into the other half. Against the Church he showed peculiar animosity, and his wife used the high altar at Clonmacnoise as a throne when she gave audience; perhaps she uttered oracular responses from it. In the south Turgeis was less powerful, for the dispossessed abbot of Armagh took refuge at Emly in Tipperary. But the whole coast was attacked by innumerable corsairs, who sometimes made raids far into the central districts. Dublin was fortified by the Norwegians about 840, and became the chief seat of the Scandinavian power. Turgeis did not live to unite the various bands, but fell into the hands of Malachi, King of Meath, in 845, and was drowned in Lough Owel. The Northmen of Limerick were defeated in the same year at Roscrea, and their earl, Olfin, was slain.[16] [Sidenote: A.D. 852. The Black and White Gentiles.] Seven years after the death of Turgeis came the Black Gentiles, who are generally supposed to have been Danes, as the White Gentiles were certainly Norwegians. Whether the colour of their armour or their complexion was referred to is doubtful. The new-comers made themselves masters of Dublin, and of the plunder which the first invaders had accumulated from all the Irish churches. Before one of the battles fought to decide whether Black or White Pagans were to enjoy this property, Horm, or Gorm, the Danish chief, is said to have invoked St. Patrick, a singular confusion of ideas, which may have resulted from intercourse with Christians in England. Victory followed. The Black Gentiles seem to have retained their supremacy; but the distinction becomes partly obliterated, and the Danes, of whom we read later, were probably intermingled with Norwegians. It is recorded that Amlaf, son of the King of Norway, came to Ireland in 852 or 853, that all the foreigners of Erin submitted to him, and that the Irish also paid tribute. The name of the Black Gentiles is believed to be preserved in the little town of Baldoyle. [Sidenote: Forty years' peace.]