burg ▁( 1 7 8 0 – 1 8 5 7 ) ▁m . ▁Duke ▁Louis ▁of ▁Wür ttemberg ▁ ▁Duch ess ▁Maria ▁Dor othe a ▁of ▁Wür ttemberg ▁( 1 7 9 7 – 1 8 5 5 ) ▁m . ▁Arch du ke ▁Joseph , ▁Pal at ine ▁of ▁Hung ary ▁ ▁Arch du ch ess ▁Marie ▁Henri ette ▁of ▁Austria ▁( 1 8 3 6 - 1 9 0 2 ) ▁m . ▁Leopold ▁II ▁of ▁Belg ium ▁ ▁Princess ▁Cl ément ine ▁of ▁Belg ium ▁( 1 8 7 2 - 1 9 5 5 ) ▁m . ▁Victor , ▁Prince ▁Nap ol éon ▁ ▁Louis , ▁Prince ▁Nap ol éon ▁( 1 9 1 4 - 1 9 9 7 ) ▁m . ▁Ali x ▁de ▁For esta ▁ ▁Charles , ▁Prince ▁Nap ol éon ▁( 1 9 5 0 -) ▁m . ▁Princess ▁Bé atrice ▁of ▁Bour bon - Two ▁Sic il ies ▁- ▁co - pret ender ▁▁ ▁Jean - Christ ophe , ▁Prince ▁Nap ol éon ▁( 1 9 8 6 -) ▁m . ▁Count ess ▁Olymp ia ▁von ▁und ▁zu ▁Ar co - Z in ne berg ▁- ▁co - pret ender ▁▁ ▁Reference : ▁ ▁Germany ▁ ▁At ▁the ▁time ▁of ▁the ▁dissol ution ▁of ▁the ▁German ▁Empire ▁in ▁ 1 9 1 8 , ▁all ▁but ▁four ▁Const itu ent ▁States ▁of ▁Imperial ▁Germany ▁had ▁produced ▁reign ing ▁monarch s ▁who ▁were ▁desc ended ▁from ▁F ris o . ▁The ▁four ▁monarch