It was reported today by some people through Twitter that the title of the Duke and Duchess of Cambridge’s first child has been confirmed by Buckingham Palace. This is not the case.
The Duchess of Cambridge’s child will not be known as Prince or Princess of Cambridge.
The title that the Royal Baby will assume from birth has been known since January of this year when Her Majesty The Queen issued a special letters patent which said that ALL children of the Duke and Duchess of Cambridge will have the title of Prince or Princess and the style of Royal Highness.
This means that the Royal Baby will be either:
His Royal Highness Prince <BABY’S NAME> of Cambridge Her Royal Highness Princess <BABY’S NAME> of Cambridge
Some major sources have reported that the Royal Baby will be known as the Prince or Princess of Cambridge. This is simply not true and should be corrected urgently.
Cambridge is a Dukedom which is held by Prince William, it is not a Principality.
It is for the same reason, as helpfully explained by one of our Twitter followers, that Prince William was Prince William of Wales but NOT Prince of Wales, which was his father.
British title conventions say that a child takes their father’s territorial designation. E.g. The Duke of York’s daughters are Princess Beatrice of York and Princess Eugenie of York.
The letters patent also granted the style of Royal Highness (HRH) to the children of the Duke and Duchess of Cambridge, so this was also already known.