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.
(..) As thirteenth in line in my own ...kingdom, I didn't stand a chance. I knew... I'd have to marry into the throne somewhere... What are you talking about? As heir, Elsa was preferable, of course. But no one was getting anywhere with her. But you...Hans? You were so desperate for love, (..)2013 Frozen