As is well-known, the title “Prince of Wales” is usually given to the heir apparent to the throne of the United Kingdom. However, this title is not automatically acquired upon becoming the heir (unlike the Dukedoms of Cornwall and Rothesay which are automatically acquired by the eldest son of the Sovereign.). As such, there is no formal requirement that the heir become the Prince of Wales. Charles became the heir in 1952, but was not created the Prince of Wales until 1958.
That being said, what would happen if Charles were to convert to Catholicism before he inherits the throne? Obviously, he would lose his place in the line of succession and Prince William would become the heir apparent. But what would happen to the rest of his titles?
Prince of Wales – would he lose this? Or is that a decision left up to the Queen? And, if the Queen decides to keep him on as PoW, would that expire at her death, or would he retain the title, potentially blocking William’s son from being created PoW?
Duke of Cornwall – would he lose this title? It seems that this title is always given to the eldest son of the Sovereign. It would not go to William, as it is not given to a grandson, even if he is the heir apparent. Or would the title go to the Duke of York as the eldest eligible son of the Sovereign? Lastly, if he kept the title, it would probably expire with the Queen’s death (or certainly with the birth of William’s eldest son if that happens after the Queen’s death).
Duke of Rothesay – the Dukedom of Rothesay belongs to “the first-born Prince of the King of Scots for ever.” But is it also restricted to heirs apparent?
In short, what happens to these titles if Charles remains alive but drops out as the heir apparent?
Zev Steinhardt