▁earliest ▁military ▁action ▁was ▁his ▁participation ▁in ▁the ▁sie ge ▁st aged ▁by ▁Henry ▁II ▁of ▁the ▁city ▁of ▁Th ou ars , ▁which ▁was ▁taken ▁ 1 0 ▁October ▁ 1 1 5 8 . ▁ ▁Cr us ade ▁▁ ▁A ▁few ▁years ▁later , ▁Maurice ▁II ▁left ▁for ▁the ▁Cr us ade . ▁This ▁act , ▁known ▁from ▁the ▁reference ▁in ▁char ter ▁ 2 3 1 ▁of ▁La ▁Ro ë ▁Ab bey ▁of ▁the ▁first ▁court ▁held ▁by ▁him ▁at ▁Po il tr ée ▁at ▁Christmas ▁time , ▁after ▁his ▁return ▁from ▁Jerusalem , ▁is ▁further more ▁att ested ▁by ▁ten ▁items ▁of ▁the ▁Cart ulaire ▁de ▁Cra on . ▁Maurice ▁II ▁thus ▁returned ▁to ▁France ▁after ▁the ▁month ▁of ▁March ▁ 1 1 7 0 . ▁ ▁He ▁took ▁several ▁ris ks ▁whilst ▁in ▁the ▁Orient ▁and , ▁in ▁executing ▁an ▁o ath ▁made ▁abroad , ▁in ▁Egypt o , ▁he ▁established ▁an ▁ann u ity ▁of ▁two ▁sous ▁for ▁the ▁benefit ▁of ▁the ▁Coll ég iale ▁Saint - N icol as ▁de ▁Cra on ▁to ▁contribute ▁towards ▁the ▁chap el ▁lamp . ▁ ▁Mar riage ▁ ▁He ▁married ▁Isabel le ▁de ▁Me ul an , ▁daughter ▁of ▁Gal é ran ▁IV ▁de ▁Me ul an , ▁wid ow ▁from ▁her ▁first ▁marriage ▁to ▁Geoff roy ▁III ▁de ▁May enne ▁on ▁his ▁return ▁from ▁the ▁Holy ▁Land ▁about ▁ 1 1 7 0 ▁This ▁al liance ▁brought ▁him ▁the ▁double ▁support ▁of ▁the ▁l ords ▁of ▁Me ul an