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Surprising Things You Didn't Know About Royal Pregnancies

4. Royal Babies Don't Have A Last Name, Much Like Madonna
Historically, royals did not have last names and were known by the house they belonged to. That meant that when a royal baby was born, they would only get a first name on their royal documents. The name of the ruling family would sometimes change depending on who came into power, like when King George V decided the British royal family would be known as "Windsor" in 1917.

When Queen Elizabeth II came into power, she changed her family name to Mountbatten-Windsor, which combined Prince Philip's surname with her house. Then in the 1980s, when Princess Diana enrolled Prince William and Harry in school, they went by the last name "Wales," since their father, Prince Charles, is the Prince of Wales.