án ' s ▁wife ▁was ▁G orm f la ith ▁( d . ▁ 1 0 3 0 ), ▁a ▁" be aut iful , ▁powerful ▁and ▁intr igu ing ▁Irish ▁woman " ▁who ▁later ▁married ▁Bor u ▁at ▁the ▁same ▁time ▁Sig try gg ▁married ▁Sl á ine . ▁ ▁He ▁may ▁have ▁had ▁a ▁son ▁killed ▁at ▁the ▁Battle ▁of ▁Cl ont arf ▁( 1 0 1 4 ), ▁as ▁The ▁Ann als ▁of ▁the ▁Four ▁Masters ▁record ▁the ▁death s ▁of ▁a ▁number ▁of ▁notable ▁N ors emen , ▁including ▁" D ub h gh all , ▁son ▁of ▁Am h la e ib h , ▁and ▁G illa ci ar ain , ▁son ▁of ▁Gl un ia ir n , ▁two ▁tan ists ▁of ▁the ▁foreign ers ;" ▁This ▁Dub h g all ▁is ▁also ▁mentioned ▁elsewhere ▁as ▁the ▁grand son ▁of ▁Sig try gg ▁Sil k be ard . ▁ ▁Am la í b ▁had ▁four ▁half - bro thers : ▁▁▁ ▁Art al ach ▁( d . ▁ 9 9 9 ), ▁Ole if ▁( d . ▁ 1 0 1 3 ), ▁God f rey ▁( d . ▁ 1 0 3 6 ), ▁Gl ú nia ir n ▁( d . ▁ 1 0 3 1 ). ▁Ole if ▁was ▁killed ▁in ▁immediate ▁ven ge ance ▁for ▁the ▁burning ▁of ▁the ▁Nor se ▁city ▁of ▁C ork . ▁Gl ú nia ir n ▁was ▁killed ▁by ▁the ▁people ▁of ▁South ▁B reg a ▁in ▁