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.
(..) I trust, Lord Egbert... that you approve of this alliance? With all my heart, sire. Then why do you spread tales... of an heir to the throne left by Queen Enid? 'Tis common knowledge, sire. The queen on her deathbed spoke of a son... sent off to Italy (..)1958 The Vikings
(..) ask you will you take Aella as your king... You need not fear, my lady. His words cannot hurt you. He has no right to the throne. There is no direct heir, my lady. There is an heir. What? Brother Godwin, I am with child... (..)1958 The Vikings