▁children : ▁a ▁son ▁who ▁died ▁in ▁inf ancy ▁and ▁a ▁surv iving ▁daughter . ▁Ex amples ▁of ▁the ▁couple ' s ▁correspond ence ▁surv ive . ▁The ▁two ▁mar ri ages ▁made ▁him ▁one ▁of ▁the ▁wealth iest ▁men ▁in ▁the ▁Boh em ian ▁Crown . ▁ ▁Th irty ▁Years ' ▁War ▁ ▁The ▁Th irty ▁Years ' ▁War ▁began ▁in ▁ 1 6 1 8 ▁when ▁the ▁est ates ▁of ▁Boh emia ▁re bel led ▁against ▁Ferdinand ▁of ▁St y ria ▁and ▁elected ▁Frederick ▁V , ▁Elect or ▁Pal at ine , ▁the ▁leader ▁of ▁the ▁Protest ant ▁Union , ▁as ▁their ▁new ▁king . ▁W allen stein ▁associated ▁himself ▁with ▁the ▁cause ▁of ▁the ▁C athol ics ▁and ▁the ▁H abs burg ▁dynast y . ▁ ▁In ▁the ▁summer ▁of ▁ 1 6 1 8 ▁Count ▁Th urn ▁led ▁ 1 0 , 0 0 0 ▁troops ▁into ▁Mor avia ▁to ▁secure ▁their ▁loyal ty ▁to ▁the ▁re bell ion . ▁Nob les ▁who ▁wished ▁for ▁a ▁rapp ro ch ement ▁with ▁Ferdinand ▁faced ▁a ▁choice . ▁Senior ▁no blem an ▁Z ier ot in ' s ▁son - in - law , ▁Georg ▁von ▁Nach od , ▁commanded ▁the ▁Mor av ian ▁caval ry ▁and ▁his ▁brother - in - law , ▁W allen stein , ▁the ▁inf antry . ▁Both ▁decided ▁to ▁take ▁their ▁regiment ▁into ▁Austria . ▁Nach od ' s ▁troops ▁re bel led ▁and ▁he ▁fled ▁for ▁his ▁life . ▁W allen stein ' s