In 825, St Blathmac and those monks who remained with him at Iona were martyred in a Viking raid, and the Abbey was burned. But only in 878 were the main relics, with Columba's reliquary shrine specified in the records, moved to Ireland, with Kells becoming the new main Columban house. Though not mentioned, this might well have been when the Book of Kells came to Kells. However, Iona Abbey was probably not deserted as its continued importance is shown by the death there in 980 of Amlaíb Cuarán, a retired King of Dublin.