▁In ▁ 1 1 5 5 , ▁Mat ilda ' s ▁son , ▁Henry ▁became ▁King , ▁and ▁was ▁able ▁to ▁force ▁Hugh ▁to ▁surrender ▁his ▁Wel sh ▁cast les . ▁ ▁The ▁two ▁remaining ▁sons ▁of ▁Mad og ▁re - div ided ▁Fer li x ▁between ▁them ; ▁Ein ion ▁Cl ud ▁received ▁the ▁southern ▁half ▁( including ▁Rad nor ), ▁which ▁became ▁El f ael , ▁while ▁his ▁brother ▁Cad wall on ▁ruled ▁the ▁northern ▁half , ▁which ▁became ▁Ma el ien ny dd . ▁Nevertheless , ▁the ▁brothers ▁were ▁host ile ▁to ▁one ▁another , ▁cov eting ▁each ▁other ' s ▁lands . ▁In ▁ 1 1 6 0 ▁Cad wall on ▁inv aded ▁El f ael , ▁captured ▁Ein ion ▁Cl ud , ▁and ▁sent ▁him ▁as ▁a ▁prisoner ▁to ▁King ▁Henry ; ▁Ein ion ▁Cl ud ▁escaped ▁( or ▁was ▁released ), ▁and ▁re - to ok ▁his ▁lands . ▁However , ▁when ▁Hugh ▁de ▁Mort imer ▁died , ▁his ▁son ▁Roger ▁arranged ▁for ▁E il ion ▁Cl ud ▁to ▁be ▁amb ushed , ▁and ▁killed . ▁In ▁ 1 1 7 9 ▁he ▁killed ▁Cad wall on ▁as ▁well . ▁ ▁By ▁now , ▁New ▁Rad nor ▁had ▁been ▁inherited ▁by ▁the ▁pat ril ine al ▁grand son ▁of ▁Philip ▁de ▁Bra ose , ▁William ▁de ▁Bra ose . ▁When ▁William ' s ▁other ▁grand father , ▁Henry ▁Fitz M iles , ▁was ▁murder ed , ▁he ▁under to ok ▁a ▁not orious ▁act ▁of ▁reven ge