 A passage preserved by the eleventh- or twelfth-century "Cogad Gáedel re Gallaib" claims that, whilst in the north, Brian's maritime forces levied tribute from Saxons and Britons, and from Argyll, the Lennox, and Alba.This source may be evidence that Brian's Scandinavian forces—perhaps commanded by Sitriuc mac Amlaíb, King of Dublin—campaigned against various Cumbrian-controlled territories, and either the English population of Lothian or the western coast of Northumbria.Just the year before, Máel Coluim mac Cináeda succeeded a kinsman to become King of Alba.