, ▁the ▁shield ▁of ▁Mont mor ency ▁includes ▁an ▁additional ▁twelve ▁e ag les ▁or ▁six teen ▁altogether ▁instead ▁of ▁four ▁previously ). ▁ ▁In ▁ 1 2 1 5 , ▁he ▁joined ▁the ▁Al big ens ian ▁Cr us ade ▁and ▁became ▁here , ▁as ▁Const able ▁of ▁France , ▁head ▁of ▁the ▁French ▁Army ▁in ▁ 1 2 1 8 . ▁In ▁the ▁service ▁of ▁King ▁Louis ▁VIII ▁of ▁France , ▁he ▁conquer ed ▁La ▁Ro ch elle ▁and ▁several ▁other ▁cities ▁from ▁the ▁English ▁in ▁ 1 2 2 4 . ▁When ▁the ▁King ▁died ▁in ▁ 1 2 2 6 , ▁he ▁protected ▁the ▁interests ▁of ▁the ▁infant ▁d au ph in ▁and ▁the ▁Queen - Reg ent ▁Bl anche ▁of ▁Cast ile . ▁ ▁He ▁died ▁in ▁ 1 2 3 0 , ▁returning ▁from ▁a ▁campaign ▁against ▁An jou . ▁ ▁Mar riage ▁and ▁Children ▁ ▁Matth ieu ▁II ▁married ▁in ▁ 1 1 9 3 ▁with ▁Ger tr ude ▁of ▁So iss ons , ▁daughter ▁of ▁Ralph , ▁Count ▁of ▁So iss ons . ▁After ▁this ▁marriage ▁was ▁ann ul led , ▁Matth ieu ▁II ▁rem ar ried ▁with ▁Emma ▁of ▁L aval ▁( 1 2 0 0 – 1 2 6 4 ), ▁daughter ▁and ▁he ir ess ▁of ▁late ▁Guy ▁V ▁de ▁L aval . ▁ ▁From ▁the ▁first ▁marriage , ▁he ▁had ▁ 4 ▁children ▁: ▁ ▁Ger tr ude ▁( d ied ▁ 1 2 5 6 ), ▁married ▁Simon ▁III ▁de