 Another conflict that could have involved Ímar and the military forces of Dublin was Gruffudd 's final defeat of Hywel ab Edwin , King of Deheubarth ( died 1044 ) . According to Brut y Tywysogion and the " B " version of Annales Cambriæ this last stand of Hywel took place at the mouth of the River Tywi — perhaps in the vicinity of Carmarthen — and included Vikings from Ireland who supported Hywel 's cause . It is apparent that Gruffudd 's adversaries generally utilised foreign military support from Ireland 's Viking enclaves . Certainly , the Book of Llandaff declares that Gruffudd struggled against English , Irish , and Vikings during his career . 
 Another conflict <a href='null_relcl' title='1'><mark>that</mark></a>could <a href='been_done' title='2'><mark>have</mark></a> involved Ímar and the military forces of Dublin was Gruffudd <a href='null_genetive' title='3'><mark>'s</mark></a>final defeat of Hywel ab Edwin , King of Deheubarth (<a href='been_done' title='4'><mark></mark></a> died 1044 ) . According to Brut y Tywysogion and the " B " version of Annales Cambriæ this last stand of Hywel took place at the mouth of the River Tywi — perhaps in the vicinity of Carmarthen — and included Vikings from Ireland <a href='null_relcl' title='5'><mark>who</mark></a>supported Hywel <a href='null_genetive' title='6'><mark>'s</mark></a>cause . It is apparent that Gruffudd <a href='null_genetive' title='7'><mark>'s</mark></a>adversaries generally utilised foreign military support from Ireland <a href='null_genetive' title='8'><mark>'s</mark></a>Viking enclaves . Certainly , the Book of Llandaff <a href='uninflect' title='9'><mark>declares</mark></a> that Gruffudd struggled against English , Irish , and Vikings during his career . 
Another conflict could done involved Ímar and the military forces of Dublin was Gruffudd  final defeat of Hywel ab Edwin , King of Deheubarth ( done died 1044 ) . According to Brut y Tywysogion and the " B " version of Annales Cambriæ dis last stand of Hywel took place at the mouth of the River Tywi — perhaps in da vicinity of Carmarthen — and included Vikings from Ireland supported Hywel  cuz . It is apparent dat Gruffudd  adversaries generally utilised foreign military support from Ireland  Viking enclaves . Certainly , tdaBook of Llandaff declare that Gruffudd struggled against English , Irish , and falcons during his career .