old norse died viking leader ruled early 10th century grandson member probably expelled dublin ruled territory southern scotland sailed separate fleets ireland won battles local kings successfully recaptured dublin established king returned england fought mac king scotland battle decisive allow establish king york rule immediately challenged group opposed group tried organise alliance lady attempt cut short death reign saw issues orders neighbouring northern kings came agreement king matter dispute recognised edward overlord died following year annals describe king fair foreigners dark foreigners succeeded king background ruling expelled city joint force led mac mac survived capture city split different groups went france england wales archaeological evidence suggests dublin remained occupied years immediately following expulsion indicating ruling elite forced leave viking raids irish settlements continued large viking fleet travelled arrival fleet marked establishment viking rule parts ireland followed settling following year main historical sources period norse irish annals annals annals believed contemporary accounts written dates later events describe considered far reliable annals annals masters complied later dates contemporary material fragments according apart additions saga fragments irish chronicles considered scholars largely accurate records albeit partisan presentation events biography presumed left dublin rest ruling appears settled southern scotland described scholars king ruled territory western northern scotland including northern isles contemporary sources silent matter earliest mention described defeating mac naval battle son mac man killed son son later accompanied fought alongside england mentioned annals grandson described leading fleets ireland sailed fleet sailed fleet northern saw threat marched army south repel fought men county claimed victory timely reinforcement army followed battle known mac died battle death marked end effective opposition return ireland led men triumphant return dublin established king annals record leaving ireland fight son king scotland according northern english historical tract completed 11th century probably access earlier material assisting son ruler battle known appears allow establish king york moved quickly soon imposed authority position king immediately challenged group york christian time opposed faction approached lady anglo saxon christian offer submission negotiations ended premature death june separate issues coins produced ruled york showing machinery government continued function possible day day working collection taxes rested southern anglo saxon king manner agreement northern kings exact nature unclear states chose edward father lord indicating acknowledged edward scholars contested unlikely died described king fair foreigners dark foreigners annals dying irish annals note departure dublin replaced succeeded king york origins historian identified figure closely associated king norway provides pieces evidence support theory firstly grandfather son legendary king secondly son killed scotland attempts modern era link kings historical figures norway suggested identified king son hunter half brother speculation nature received support states good historical linguistic evidence link norway link dynasty dublin history family annals identified use meaning grandson possible identify known sons father possible reason lack child son ruled dublin spent time outside ireland making legitimacy rule dublin dependent identity grandfather father possibility grandson daughter right rule dependent grandfather known identified use ruled king dublin king time individual identified son annals son given mac led raid week killed annals masters annals king annals masters suggests fellow came island family tree
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