known old norse died viking leader ruled dublin viking early 10th century grandson member probably expelled dublin ruled territory eastern england sailed separate fleets ireland won battles local kings successfully recaptured dublin established king returned england king won victory battle coalition local irish kings aimed expel ireland irish kings killed battle including northern high king ireland left dublin succeeding king year led raid act defiance king died succeeding king written accounts conflict evidence suggests viking large following years agreement sort achieved married sister converted christianity long soon reverted died succeeded son later reigned king dublin son king son king dublin 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 coins dating period bearing legend comes found indicating ruled territory eastern exile ireland conquered south mention english sources suggesting longer ruling time earliest mention 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 returned england soon according departure contingent warriors try expel ireland led coalition northern irish kings south dublin forces met near modern day county dublin dated september annals resulting battle overwhelming victory forces falling battle alongside kings ruler southern died fighting army annals report left dublin power god travelled assumed succeeding died following year followed king dublin brother cousin submitted king year following departure dublin led raid violation terms submission agreed edward suggested act defiance indicating edward submit like makes mention years installation king death edward elder coins existence lincoln period bear important piece evidence suggest ruled large area south claim contradicted says south submitted edward coins indicate viking large area years happen went chronicle edward control likely stretched kingdom resources breaking point allowing exploit ill edward existed populace edward unable effectively oppose suggests silence chronicle edward failing power years reign tendency record successes failures death recorded number important welsh irish annals suggesting fall importance standing power edward elder successor met chronicle mention reason meeting reports unnamed sister married years previously predecessor royal marriage bring control according fact marriage sister occurred old royal centre suggestion marriage supposed perform similar function agreement reached necessitated conversion christianity soon reverted died following year succeeded annals describe death family annals identified use 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 annals mention sons falling battle son ruled king unknown length time death battle son reigned twice king dublin king basis middle english romance character son father named possible son according saga daughter named married king norway according hudson unlikely correct marriage said occurred years death likely actually granddaughter son married unnamed sister historians generally describe sister points rests late testimony william makes distinction recording marriage william know traditions recorded bury early twelfth century identify truth identification debated regardless likely entered according late sources chronicler john son princess family tree
Sitric Cáech