 In 1044 , the Annals of Tigernach records that Ímar penetrated into the domain of the Uí Fhíachrach Arda Sratha and killed their chief . The annal @-@ entry also indicates that Ímar stormed the church of Armagh , and burned Scrín Pátraic ( the " Shrine of Patrick " ) in the attack . The following year , he again invaded Rathlin Island , and his subsequent slaughter of three hundred noblemen of the Ulaid , including a certain heir apparent named Ragnall Ua Eochada , is documented by the Annals of Clonmacnoise , the Annals of Inisfallen , the Annals of Tigernach , and the Annals of the Four Masters . This remarkable action may indicate that the Dubliners and Ulaid were battling for control of Rathlin Island . If so , it could be evidence that Ímar enjoyed the possession of Mann by this date . The domain of the Ulaid is certainly the closest Irish territory to Mann , and the control of the Manx fleet could account for the Dubliner 's ability to challenge the Ulaid . Whatever the case , within the year Niall mac Eochada , King of Ulaid ( died 1063 ) is recorded to have attacked Fine Gall — Dublin 's agriculturally @-@ rich northern hinterland — in what may have been a retaliatory raid . 
 In 1044 , the Annals of Tigernach <a href='uninflect' title='1'><mark>records</mark></a> that Ímar penetrated into the domain of the Uí Fhíachrach Arda Sratha and killed their chief . The annal @-@ entry also <a href='uninflect' title='2'><mark>indicates</mark></a> that Ímar stormed the church of Armagh , and burned Scrín Pátraic ( the " Shrine of Patrick " ) in the attack . The following year , he again<a href='been_done' title='3'><mark></mark></a> invaded Rathlin Island , and his subsequent slaughter of three hundred noblemen of the Ulaid , including a certain heir apparent named Ragnall Ua Eochada , is documented by the Annals of Clonmacnoise , the Annals of Inisfallen , the Annals of Tigernach , and the Annals of the Four Masters . This remarkable action may indicate that the Dubliners and Ulaid <a href='uninflect' title='4'><mark>were</mark></a> battling for control of Rathlin Island . If so , it could be evidence that Ímar enjoyed the possession of Mann by this date . The domain of the Ulaid <a href='drop_aux' title='5'><mark>is</mark></a>certainly the closest Irish territory to Mann , and the control of the Manx fleet could account for the Dubliner <a href='null_genetive' title='6'><mark>'s</mark></a>ability to challenge the Ulaid . Whatever the case , within the year Niall mac Eochada , King of Ulaid (<a href='been_done' title='7'><mark></mark></a> died 1063 ) is recorded to <a href='been_done' title='8'><mark>have</mark></a> attacked Fine Gall — Dublin <a href='null_genetive' title='9'><mark>'s</mark></a>agriculturally @-@ rich northern hinterland — in what may have been a retaliatory raid . 
In 1044 , the Annals of Tigernach record that Ímar penetrated into da domain of tdaUí Fhíachrach Arda Sratha and killed their chief . The annal @-@ entry also indicate dat Ímar stormed the church of Armagh , and burned Scrín Pátraic ( the " Shrine of Patrick " ) in the attack . Thdaollowing year , he again been invaded Rathlin Island , and his subsequent slaughter of three hundred noblemen of the Ulaid , including a certain heir apparent named Ragnall Ua Eochada , is documented by the Annals of Clonmacnoise , the Annals of Inisfallen , thedanals of Tigernach , and the daals of the 4dasters . This remarkable action may indicate tdatthe Dudaners and Ulaid was battling fa control of Rathlin Island . If so , it could be evidence thdatmar enjoyed the possession of Mann by this date . The domda of the Ulaid certainly the closest Irish territory to Mann , and the control of the Manx fleet could account for the Dubldar  ability to challenge the UlaiddaWhatever the case ,dathin the year Nida mac Eochada , King of Ulaid ( done died 1063 ) is recorded to done attacked Fine Gall — Dublin  agriculturally @-@ rich northern hinterland — in what may have been a retaliatory raid .