Centuries before the introduction of Christianity into the Scandinavian North (in the tenth and eleventh centuries)—nay, centuries before the actual commencement of the Viking expeditions—the Irish people had been Christianized. At a very early period numbers of churches and convents were erected in Ireland, which was also celebrated for its many holy men. It was a common saying that the Irish soil was so holy that neither vipers, nor any other poisonous reptiles, could exist upon it. Numerous priests set out from Ireland as missionaries to the islands lying to the west of Scotland; nay, they even went as far as the Faroe Islands and Iceland, long before those islands had been colonized. Thus, when the Northmen first discovered Iceland (about the year 860), they found no population there; but on “Papey,” in “Papyli,” and several places in the east and south of the country, they found traces of “Papar,” or Christian priests, who had left behind them croziers, bells, and Irish books; whence they perceived that these priests were “Westmen,” or Irishmen; for just as the Irish called the Scandinavians “Ostmen,” because their home lay to the east of Ireland, so also did the Scandinavians call the Irish “Westmen.” The most southern group of islands near Iceland is called to the present day “Vestmannaeyjar” (the Westman Isles), because, at the time of their colonization, a number of Irish serfs, or Westmen, were put to death there for deceiving their masters. Not even the Norwegian expeditions into Ireland, and the destruction of churches and convents by which they were accompanied, were able to annihilate the influence of the Irish clergy on the diffusion of Christianity in the north-western part of Europe. Not only were the Norwegians and Danes settled in Ireland and the rest of the Western Isles soon converted from heathenism by Irish monks and priests, but Christianity was communicated through these converts to many of their Scandinavian countrymen, who visited Ireland partly as Vikings and partly as merchants. Thus the Norwegian king Olaf Tryggvesön was baptized by an abbot on the Sylling Isles near Ireland, or, as other Sagas state, “to the west over in Ireland;” whence we may probably conclude that the Sylling Isles are not, as was before supposed, the Scilly Isles near England, but the Skellig Isles on the south-west coast of Ireland, on one of which there was at that time a celebrated abbey. At all events, it is certain that Olaf Tryggvesön, during his long abode with his brother-in-law, King Olaf Kvaran, in Dublin, must, by his constant intercourse with the Irish Christians, have been strengthened in his determination to christianize Norway. Another proof of the influence of Christianity in Ireland on the North is, that an Irish princess, Sunneva, was at a later period worshipped as a saint in Norway. Her body is alleged to have been deposited in a large and handsome shrine over the high altar in Christ Church, in Bergen, and on