 Thus , the two brothers , Bróðir and Óspak , met again at the Battle of Clontarf , on diagonally opposite wings . Bróðir had brought with him 1000 mail @-@ clad Norsemen , and led the " murderous foreign Danes " alongside Earl Sigurd of Orkney . On the wing directly opposite Bróðir was Wolf the Quarrelsome , one of Brian 's followers . Bróðir drove deep into the opposite wing , " and felled all the foremost that stood there " , as his mail protected him from swordblows . When Wolf turned to meet him , however , he " thrust at him thrice so hard that Bróðir fell before him at each thrust " , and Bróðir " fled away into the wood at once . " The two sides were very evenly matched , and the battle raged all day , from high tide at sunrise to sunset . However , Bróðir 's absence reduced the morale of his men , and the Manx Vikings began to flee back to their ships after they were broken by the personal bodyguard of Murchad , the son of Brian , ending in an eventual victory for Brian 's allies . 
