 Gerald alleged this allowed the Scots to conquer the Picts, demonstrating for his reader how by perfidy "an inferior people can overcome a superior race".The account, hostile to the Scots in the way Gerald told it, was repeated in future Anglo-Norman and English histories, including the "Polychronicon" of Ranulf Higdon.The tale is a recognisable part of European folklore, being classed by Stith Thompson as tale-type K 811.1.