 Only three rune stones are known from the west coast of Scotland, on Christian memorials found on Barra, Inchmarnock and Iona.In the Firth of Clyde, Norse burials have been found on Arran, although not Bute and place name evidence suggests a settlement pattern that was much less well-developed than in the Hebrides.On the mainland coast there is cluster of Norse place names around Largs and an ornate silver brooch was found on a hillside near Hunterston that is of likely 7th-century Irish origin but with a 10th-century runic inscription.