PERSON@1 -LRB- NUMBER@1 December NUMBER@2 NUMBER@3 June NUMBER@4 -RRB- was an MISC@1 , MISC@2 and Royal Prince of LOCATION@1 and of LOCATION@2 , and from NUMBER@5 until his death , heir presumptive to the MISC@3 throne .

PERSON@2 , Archduke PERSON@1 of Austria-Este -LRB- -RRB- -LRB- December NUMBER@1 , NUMBER@2 -- June NUMBER@3 , NUMBER@4 -RRB- was an Archduke of LOCATION@3 and , from NUMBER@6 until his death , heir presumptive to the MISC@3 emperor .
