Quote Originally Posted by JohntheBiker View Post
Interestingly, the Duke of Edinburgh did not automatically become a prince (of the UK) when Elizabeth was crowned. It was almost six years later that the Queen gave him the tiltle. Before that he was styled as His Royal Highness, the Duke of Edinburgh.
Equally interesting is that an heir presumptive can never be called Princess of Wales. The Queen had no other title than HRH Princess Elizabeth until she married whereupon she took her husband's title and became HRH Princess Elizabeth, Duchess of Edinburgh until her accession.