▁In ▁ 1 2 6 6 , ▁he ▁was ▁married ▁to ▁Y ol ande ▁II , ▁Count ess ▁of ▁Ne vers ▁( 1 2 4 7 – 1 2 8 0 ), ▁making ▁him ▁Count ▁of ▁Ne vers , ▁A ux er re ▁and ▁T onn ere . ▁In ▁ 1 2 6 8 , ▁John ▁was ▁made ▁Count ▁of ▁Val ois ▁and ▁C ré py ▁on ▁his ▁own ▁right ▁by ▁his ▁father ▁the ▁king , ▁a ▁gift ▁he ▁received ▁as ▁par é age . ▁ ▁Cr us ade ▁▁ ▁Two ▁years ▁later , ▁John ▁accompanied ▁his ▁father ▁during ▁the ▁E ighth ▁Cr us ade , ▁which ▁reached ▁Tun is ▁in ▁July ▁after ▁setting ▁out ▁from ▁C agli ari ▁on ▁S ardin ia . ▁But ▁at ▁Tun is ▁the ▁army ▁suffered ▁an ▁out break ▁of ▁d ys ent ery . ▁John ▁Tr istan ▁was ▁one ▁of ▁the ▁vict ims ▁who ▁died ▁of ▁it , ▁and ▁three ▁weeks ▁later , ▁St . ▁Louis ▁also ▁succ um bed ▁to ▁the ▁disease . ▁Both ▁bodies ▁were ▁transport ed ▁to ▁France ▁and ▁buried ▁in ▁the ▁Bas il ica ▁of ▁St ▁Den is . ▁ ▁John ' s ▁marriage ▁remained ▁child less . ▁His ▁wid ow ▁married ▁again ▁in ▁ 1 2 7 2 ▁with ▁Robert ▁III ▁of ▁Fland ers ; ▁the ▁county ▁of ▁Val ois , ▁his ▁pr er og ative , ▁returned ▁to ▁the ▁Crown . ▁ ▁An c est ry ▁ ▁Notes ▁ ▁References ▁ ▁External ▁links ▁ ▁| - ▁ ▁Category : F rench