A century later, in 980, we find the Hebrides used as a recruiting ground by the Norse king of Dublin. In that year Mael Sechnaill, king of Ireland, won the battle of Tara against "the Foreigners of Dublin and the Islands." After this defeat, Olaf, king of Dublin, laid down his kingship and retired into religious life in Iona, where he died not long later. The incident shows that the Norse islanders had by this time accepted Christianity, and that Iona, which they had barbarously ravaged again and again, had regained among them the religious prestige that it held before among the people of Ireland and Scotland. About this time, the Danes, who first appear on our coasts in hostility to the Norwegians, established a kingdom of the Hebrides, under Godred, son of Harold. Godred invaded Dál Riada in Ulster in 989, and was killed there. His son Rögnvald became king of the Hebrides and died in 1005. With his death, the Danish kingdom in the islands appears to cease. In 1014, the chief magnate of the Hebrides was Earl Gilli. He held aloof from the great muster of Norsemen from many regions that came to Clontarf to win the sovereignty of Ireland for Earl Sigurd of the Orkneys. From 1041 till 1064, the Hebrides appear subject to the Orkney earl Thorfinn. During this time, the islands supplied forces to Harald Hardrada, king of Norway, for an invasion of England. After this time, there are indications that the predominance of the Orkney earls was replaced in the Hebrides by that of the kings of the Isle of Man. Later on, the kings of Man are seen to occupy a middle position of authority between the kings of Norway and the local rulers of the Hebrides. In the title of the bishops of Sodor and Man, the name Sodor is an abbreviation for Sudreyar, "the southern isles," this being the ordinary Norse name for the Hebrides, in contradistinction to the northern isles of Orkney and Shetland. In 1098, Magnus Barefoot, king of Norway, came with a fleet and re-established the somewhat shaky Norwegian sovereignty over the Orkneys, the Hebrides, Cantire, and the Isle of Man. Four years later, in 1102, he again visited these dominions and was received without opposition. The following year, 1103, king Magnus landed in eastern Ulster and was cut off and slain. In 1134, a young Hebridean named Gilla Críst, claiming to be a son of Magnus, became king of Norway under the name of Harald Gilli. About this time, the most prominent magnate in the Hebrides was named Holdbodi, who lived in the island of Tiree. The Norse documents dealing with these times and with the succeeding century never suggest that the masters of the Hebrides use any language but Norse, though some of them bear Gaelic names; and the same documents apply the name Scots to the mainlanders only, never to the people of the islands.