. ▁Marshall ▁won ▁the ▁war ▁with ▁vict ories ▁at ▁the ▁batt les ▁of ▁Lincoln ▁and ▁D over ▁in ▁ 1 2 1 7 , ▁leading ▁to ▁the ▁Tre aty ▁of ▁Lamb eth ▁by ▁which ▁Louis ▁ren ounced ▁his ▁claims . ▁In ▁victory , ▁the ▁Marsh al ▁Prote ctor ate ▁re iss ued ▁the ▁Mag na ▁Cart a ▁agreement ▁as ▁a ▁basis ▁for ▁future ▁government . ▁ ▁Government ▁ ▁Within ▁twenty ▁years ▁of ▁the ▁Norman ▁con quest , ▁the ▁Ang lo - S ax on ▁el ite ▁had ▁been ▁replaced ▁by ▁a ▁new ▁class ▁of ▁Norman ▁nob ility . ▁The ▁new ▁ear ls ▁( success ors ▁to ▁the ▁e al der men ), ▁sh er iffs ▁and ▁senior ▁cler gy ▁were ▁all ▁drawn ▁from ▁their ▁ranks . ▁In ▁many ▁areas ▁of ▁society ▁there ▁was ▁continu ity , ▁as ▁the ▁Norm ans ▁adopted ▁many ▁of ▁the ▁Ang lo - S ax on ▁government al ▁institutions , ▁including ▁the ▁tax ▁system , ▁m ints ▁and ▁the ▁central isation ▁of ▁law - making ▁and ▁some ▁jud icial ▁matters ; ▁initially ▁sh er iffs ▁and ▁the ▁hundred ▁courts ▁continued ▁to ▁function ▁as ▁before . ▁ ▁The ▁method ▁of ▁government ▁after ▁the ▁con quest ▁can ▁be ▁described ▁as ▁a ▁fe ud al ▁system , ▁in ▁that ▁the ▁new ▁nobles ▁held ▁their ▁lands ▁on ▁beh alf ▁of ▁the ▁king ; ▁in ▁return ▁for ▁prom ising ▁to ▁provide ▁military ▁support ▁and ▁taking ▁an ▁o ath ▁of ▁alleg iance , ▁called ▁hom age , ▁they ▁were ▁granted ▁lands ▁term ed ▁a ▁f