The Prince of Wales is (the) 'heir apparent' to the throne of England.
The coach named her assistant as her 'heir apparent'.
She is the sole 'heir to' her family's fortune.
(..) You will bow down before me, Jor-El. I swear it! No matter that it takes an eternity! You will bow down before me! Both you and then one day... ...your heirs! Forgive me, forgive me.... An unpleasant duty has been masterly performed, Jor-El. They have received the fate they deserved. (..)1978 Superman