▁ ▁K ray en hoff ▁bus ied ▁himself ▁with ▁determ ining ▁the ▁Amsterdam ▁Level . ▁ ▁King ▁Louis ▁Bon ap arte ▁( the ▁r uler ▁of ▁the ▁Kingdom ▁of ▁Holland ▁after ▁ 1 8 0 6 ) ▁was ▁very ▁taken ▁with ▁him ▁and ▁gave ▁him ▁various ▁positions . ▁ ▁K ray en hoff ▁was ▁for ▁ten ▁months ▁Minister ▁of ▁War ▁and ▁organized ▁Amsterdam ' s ▁def ensive ▁fort ifications ▁against ▁a ▁fe ared ▁invasion ▁by ▁the ▁king ' s ▁brother ▁Napoleon ▁Bon ap arte . ▁K ray en hoff ▁in ▁this ▁context ▁initi ated ▁the ▁construction ▁of ▁the ▁St elling ▁van ▁Amsterdam , ▁at ▁this ▁time ▁called ▁the ▁Post en ▁van ▁K ray en hoff , ▁or ▁the ▁O ude ▁St elling ▁van ▁Amsterdam . ▁ ▁When ▁Napoleon ▁became ▁aware ▁of ▁this , ▁K ray en hoff ▁had ▁to ▁be ▁fired . ▁ ▁However , ▁in ▁a ▁personal ▁encounter ▁in ▁October ▁ 1 8 1 1 , ▁Napoleon ▁showed ▁interest ▁in ▁him . ▁T ogether ▁they ▁went ▁to ▁see ▁the ▁fort ifications ▁in ▁Na arden ▁and ▁Mu iden . ▁The ▁em peror ▁gave ▁him ▁an ▁appointment ▁in ▁Paris ▁to ▁check ▁the ▁defense ▁of ▁the ▁city . ▁K ray en hoff ▁got ▁an ▁attract ive ▁offer ▁from ▁Russia , ▁but ▁fe ared ▁the ▁ts ar , ▁for ▁his ▁two ▁sons ▁had ▁been ▁captured ▁during ▁the ▁French ▁invasion ▁of ▁Russia ▁in ▁ 1 8 1 2 ▁and ▁were ▁still ▁in ▁capt ivity . ▁ ▁His ▁el dest ▁son ▁fought ▁in ▁the ▁Battle ▁of ▁Water lo