▁en list ment . ▁ ▁He ▁was ▁buried ▁beside ▁his ▁mother ▁in ▁the ▁Kap uz iner ▁C rypt ▁in ▁Vienna . ▁ ▁Mar riage ▁and ▁issue ▁He ▁was ▁married ▁in ▁Bel œ il ▁on ▁ 1 7 ▁January ▁ 1 9 5 0 ▁to ▁Princess ▁Y ol ande ▁of ▁L igne ▁( born ▁ 6 ▁May ▁ 1 9 2 3 ). ▁They ▁had ▁four ▁children . ▁ ▁Arch du ke ▁Rudolf ▁of ▁Austria ▁( born ▁ 1 9 5 0 ); ▁married ▁Baron ess ▁H él ène ▁de ▁Vill enf agne ▁de ▁Vog els an ck ▁( b . ▁ 1 9 5 4 ) ▁in ▁Br uss els ▁ 3 ▁July ▁ 1 9 7 6 , ▁their ▁family ▁taking ▁up ▁residence ▁in ▁Belg ium ▁there after . ▁On ▁ 2 9 ▁May ▁ 1 9 7 8 ▁he , ▁his ▁children ▁and ▁male - line ▁descend ants ▁were ▁incorpor ated ▁in ▁the ▁nob ility ▁of ▁Belg ium ▁by ▁royal ▁letters ▁pat ent ▁with ▁the ▁her edit ary ▁title ▁Prince / s se ▁de ▁H abs bourg - L or raine ▁and ▁the ▁style ▁of ▁Ser ene ▁High ness . ▁Rudolf ▁works ▁at ▁invest ment ▁man agers ▁A AA ▁G estion , ▁based ▁in ▁Vill ars - sur - G l â ne , ▁Switzerland . ▁He ▁and ▁H él ène ▁have ▁eight ▁children : ▁Arch du ke ▁Carl ▁Christian ▁of ▁Austria ▁( b . ▁ 1 9 7 7 ); ▁married ▁on ▁ 2 ▁June ▁ 2 0 0 7