 Whatever the circumstances of Domnall 's accession , the Uí Chennselaig regime in Dublin was short @-@ lived . The Annals of Inisfallen , the Annals of the Four Masters , and the Annals of Ulster , all reveal that , within the year , Domnall died after a brief illness , with the latter two sources specifying that he succumbed after three nights of sickness . The Annals of Inisfallen and the Annals of Ulster accord him the title King of Dublin , and make no mention of any connection with the Leinster kingship . Upon Domnall 's demise , Toirdelbach had his own son , Muirchertach ( died 1119 ) , appointed King of Dublin . In so doing , Toirdelbach reinforced his authority in Dublin , and followed a precedent started by Domnall 's grandfather , in which a claimant to the high @-@ kingship of Ireland installed his own heir to the kingship of Dublin . 
 Whatever the circumstances of Domnall <a href='null_genetive' title='1'><mark>'s</mark></a>accession , the Uí Chennselaig regime in Dublin was short @-@ lived . The Annals of Inisfallen , the Annals of the Four Masters , and the Annals of Ulster , all reveal that , within the year , Domnall died after a brief illness , with the latter two sources specifying that he succumbed after three nights of sickness . The Annals of Inisfallen and the Annals of Ulster accord him the title King of Dublin , and make no mention of any connection with the Leinster kingship . Upon Domnall <a href='null_genetive' title='2'><mark>'s</mark></a>demise , Toirdelbach had his own son , Muirchertach (<a href='been_done' title='3'><mark></mark></a> died 1119 ) , appointed King of Dublin . In so doing , Toirdelbach reinforced his authority in Dublin , and followed a precedent started by Domnall <a href='null_genetive' title='4'><mark>'s</mark></a>grandfather , in which a claimant to the high @-@ kingship of Ireland installed his own heir to the kingship of Dublin . 
Whatever da circumstances of Domnall  accession , the Uí Chennselaig regime in Dublin was short @-@ lived . The Annals of Inisfallen , tdaAnnals of thdaour Masters , and the Annals of Ulster , alll reveal that , within thedaar , Domnall died after a brief illness , wid the dater 2 sources specifying that he succumbed after three nites of sickness . The Annals of Inisfallen and the Annals of Ulster accord him the title King of Dublin , and make no mention of any connection with the Leinster kingship . Upon Domnall  demise , Toirdelbach had his own son , Muirchertach ( been died 1119 ) , appointed King of Dublin . In so doin , Toirdelbach reinforced his authority in Dublin , and followed a precedent started by Domnall  granddaddy , in which a claimant to the high @-@ kingship of Ireland installed his own heir to the kdaship of Dublin .