There were two vikings called Vigbiod and Vestmar; they were South-islanders, and lay out both winter and summer; they had thirteen ships, and harried mostly in Ireland, and did many an ill deed there till Eyvind the Eastman took the land-wardship; thereafter they got them gone to the South-isles, and harried there and all about the firths of Scotland: against these went Thrand and Onund, and heard that they had sailed to that island, which is called Bute.