ALTHOUGH THE CHRONOLOGY of events in Britain in the four or so years following Athelstan’s victory at Brunanburh in 937 remains unclear and subject to some dispute, certain facts appear to have been universally accepted as established. There is, for example, a consensus among historians concerning aspects of the career of Anlaf Guthfrithson, King of the Dublin Vikings, subsequent to his defeat at that battle. This, in outline, is that he fled to Ireland and remained there until late in 939 when, consequent upon the death of his nemesis, Athelstan, he returned to England and assumed the kingship of York, ruling then until his death in 941. This consensus has persisted unchallenged despite there being no statement in the early sources — either Irish or English — that Guthfrithson went to York on his departure from Ireland, no evidence that unequivocally places him in the city at any time during the following two years and no source, including various obits, which describes him as King of York or even associates him with that city. Murray Beaven long ago pointed out the difficulty of distinguishing between Anlaf Guthfrithson and his cousin, Anlaf Sihtricson (sometimes referred to in the sources and hereafter in this article by his byname ‘Cuaran’) and that this together with ‘. . . the impossibility of reconciling the conflicting dates supplied by the various manuscripts of the (Anglo-Saxon) Chronicle, have combined to render this period, 939–46, one of the obscurest in our national annals’. 1 This article argues that it is precisely such a confusion in references to the two Viking leaders that has led to Anlaf Guthfrithson being wrongly identified as King of York. It further proposes that after Brunanburh Anlaf Guthfrithson returned to Ireland determined from the beginning to launch another expedition against the mainland, but that his ambitions were not focused upon the Kingdom of York. He was instead intent upon exploiting the military weakness of his former allies of Alba and Strathclyde following the war of 937, and quite possibly also that of his West Saxon opponents who may have temporarily retrenched from adventures in the far North consequent on heavy losses at Brunanburh. Taking advantage of a post bellum political vacuum, he likely sought plunder 1 M.L.R. Beaven, ‘King Edmund I and the Danes of York’, English Historical Review, XXXIII (1918), 1.
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