▁of ▁Sig try gg ▁Sil k be ard , ▁the ▁Hi ber no - N or se ▁King ▁of ▁Dublin , ▁and ▁Sl á ine , ▁the ▁daughter ▁of ▁Brian ▁Bor u . ▁A ▁member ▁of ▁the ▁U í ▁Í ma ir ▁dynast y , ▁his ▁ancest ors ▁also ▁included ▁Am la í b ▁Cu ar án ▁and ▁G orm f la ith , ▁who ▁were ▁influ ential ▁in ▁medieval ▁Ireland . ▁ ▁He ▁was ▁held ▁to ▁r ans om ▁by ▁the ▁G ael ic ▁lord ▁of ▁B reg a ▁and ▁later ▁killed ▁in ▁England ▁by ▁Ang lo - S ax ons ▁while ▁on ▁his ▁way ▁on ▁pil gr image ▁to ▁Rome ▁in ▁ 1 0 3 4 . ▁He ▁thus ▁prede ce ased ▁his ▁father . ▁Some ▁of ▁his ▁descend ants ▁later ▁became ▁the ▁Kings ▁of ▁G w yn ed d ▁in ▁Wales . ▁ ▁Life ▁ ▁Family ▁Am la í b ▁was ▁the ▁son ▁of ▁the ▁r uling ▁King ▁of ▁Dublin , ▁Sig try gg ▁Sil k be ard ▁( d . ▁ 1 0 4 2 ), ▁and ▁his ▁wife ▁Sl á ine , ▁daughter ▁of ▁the ▁King ▁of ▁Mun ster ▁and ▁High ▁King ▁of ▁Ireland , ▁Brian ▁Bor u ▁( d . ▁ 1 0 1 4 ), ▁and ▁his ▁first ▁wife . ▁His ▁pat ernal ▁grand father ▁was ▁Am la í b ▁Cu ar án ▁( d . ▁ 9 8 1 ), ▁the ▁powerful ▁King ▁of ▁York ▁and ▁of ▁Dublin . ▁Am la í b ▁Cu ar