▁ ▁Maria ▁Ther esa ▁of ▁Austria ▁( 1 8 1 6 – 1 8 6 7 ) ▁m . ▁Ferdinand ▁II ▁of ▁the ▁Two ▁Sic il ies ▁ ▁Prince ▁Alfonso , ▁Count ▁of ▁Cas erta ▁( 1 8 4 1 – 1 9 3 4 ) ▁m . ▁Princess ▁Maria ▁Anton iet ta ▁of ▁Bour bon - Two ▁Sic il ies ▁ ▁Prince ▁Ran ieri , ▁Duke ▁of ▁Castro ▁( 1 8 8 3 – 1 9 7 3 ) ▁m . ▁Count ess ▁Maria ▁Carolina ▁Z amo y ska ▁ ▁Prince ▁Ferdinand , ▁Duke ▁of ▁Castro ▁( 1 9 2 6 – 2 0 0 8 ) ▁m . ▁Ch antal ▁de ▁Che v ron - V illet te ▁ ▁Prince ▁Carlo , ▁Duke ▁of ▁Castro ▁( 1 9 6 3 – ) ▁– ▁pret ender ▁ ▁The ▁claim ant ▁of ▁the ▁Cal ab ria ▁branch , ▁Prince ▁Pedro , ▁Duke ▁of ▁Cal ab ria , ▁is ▁desc ended ▁from ▁his ▁son ' s ▁daughter ▁six ▁ways ; ▁one ▁way ▁he ▁desc ends ▁from ▁his ▁son ' s ▁daughter ▁is : ▁ ▁John ▁William ▁F ris o , ▁Prince ▁of ▁Orange ▁( 1 6 8 7 – 1 7 1 1 ) ▁m . ▁Land gra v ine ▁Marie ▁Louise ▁of ▁H esse - K ass el ▁ ▁William ▁IV , ▁Prince ▁of ▁Orange ▁( 1 7 1 1 – 1 7 5 1 ) ▁m . ▁Anne , ▁Princess ▁Royal ▁and ▁Princess ▁of ▁Orange ▁ ▁Princess ▁Carolina ▁of ▁Orange - N