▁Henry ▁named ▁his ▁daughter ▁Mat ilda ▁as ▁his ▁he ir , ▁but ▁on ▁Henry ' s ▁death ▁in ▁ 1 1 3 5 ▁her ▁cousin ▁Stephen ▁of ▁Blo is ▁had ▁himself ▁proc laimed ▁king . ▁Mat ilda ' s ▁husband ▁Geoff rey , ▁Count ▁of ▁An jou ▁showed ▁little ▁interest ▁in ▁England , ▁but ▁he ▁supported ▁Mat ilda ▁by ▁entering ▁Norm andy ▁to ▁claim ▁her ▁inheritance . ▁Mat ilda ▁land ed ▁in ▁England ▁to ▁challenge ▁Stephen ▁and ▁was ▁declared ▁" L ady ▁of ▁the ▁English " ▁which ▁resulted ▁in ▁a ▁civil ▁war ▁called ▁the ▁An archy . ▁Stephen ▁was ▁defeated ▁and ▁captured ▁at ▁the ▁Battle ▁of ▁Lincoln ▁( 1 1 4 1 ) ▁and ▁Mat ilda ▁was ▁the ▁effective ▁r uler . ▁When ▁Mat ilda ▁was ▁forced ▁to ▁release ▁Stephen ▁in ▁a ▁host age ▁exchange ▁for ▁her ▁half - bro ther ▁Robert , ▁ 1 st ▁Earl ▁of ▁Gl ouc ester , ▁Stephen ▁was ▁re - c rown ed . ▁The ▁conflict ▁in ▁England ▁continued ▁incon clus ively . ▁However , ▁Geoff rey ▁secured ▁the ▁Duch y ▁of ▁Norm andy . ▁Mat ilda ' s ▁son , ▁Henry ▁II , ▁by ▁his ▁marriage ▁to ▁Ele an or ▁of ▁Aqu itaine ▁had ▁acquired ▁the ▁Duch y ▁of ▁Aqu itaine ▁and ▁was ▁now ▁imm ens ely ▁rich . ▁With ▁sk il ful ▁neg ot iation ▁with ▁the ▁war - we ary ▁bar ons ▁of ▁England ▁and ▁King ▁Stephen , ▁he ▁agreed ▁to ▁the ▁Tre aty ▁of ▁Wall ing ford ▁and ▁was ▁recogn ised ▁as ▁Stephen