The first Norwegian settlement was made in Iceland in 875, by Leif and Ingulf, who carried with them a number of Irish captives; and the Landnamabók states that “before Iceland was colonised from Norway, men were living there whom the Northmen called Papas; they were Christians, and it is thought they came over the sea from the west, for after them were found Irish books, and bells, and crosiers, and other things, so that one could see that they were Westmen: these things were found in Papey, eastwards, and in Papyli.” Again, in the Islendingabók of Ari Frodi the same reason is assigned for the departure of the monks as is given by Dicuil. Ari Frodi also says, speaking of Iceland:—“Christian men were here then called by the Northmen _Papa_, but afterwards they went their way, for they would not remain in company with heathens; and they left behind them Irish books, and bells, and pastoral staves, so that it was clear that they were Irishmen.”
Thus by the concurrent testimony of Adamnan, the biographer of St. Columba, himself an abbot of the monastery of Hy; of the Irish monk Dicuil, writing during the lifetime of the men who had fled from the Northern robbers; and lastly, of the Icelandic historians themselves—it is established that the whole of the northern islands were visited by Christian teachers, and probably, in part at least, converted to the Christian faith, before they were overrun by the Norwegian invaders, and the new faith swallowed up in the rising tide of heathenism thrown upon their shores from the land of Odin and the Aser.
In the absence of all record we cannot expect to ascertain to what extent these early missionary settlements had succeeded in leavening the Celtic population of the islands of Orkney and Shetland with the Christian faith. But it seems probable that during the three centuries that intervened between the coming of Cormac in his coracle and the arrival of Harald Harfagri with his fleet of war galleys, the new faith had been firmly established and widely extended both in the northern mainland of Scotland and in the remoter isles.
The indications which point to a Christian occupation of the isle, of no inconsiderable extent and continuance, previous to their occupation by the Norsemen, are:—The dedications of the early ecclesiastical foundations; the occurrence of monumental stones sculptured in the style peculiar to the earliest Christian monuments of the mainland of Scotland, and bearing inscriptions in the Ogham character; the finding (as at Saverough and Burrian) of ecclesiastical bells of the square-sided form, peculiar to the early ages of the Church; and the occurrence in the Norse topography of the islands of place-names indicative of the previous settlement of Celtic Christian priests.