Islands of the EveningFourteen centuries ago, Irish saints journeyed to the Hebrides and Scotland's Atlantic shore. They sought spiritual solitude in remote places, but their mission was also to spread the word of God to the peoples of Scotland. Columba was the most famous of these pioneers who rowed their curraghs towards danger and uncertainty in a pagan land, but the many others are now largely forgotten. Alistair Moffat sets off in search of these elusive figures. As