While everyone’s placing bets on what Meghan Markle and Prince Harry’s baby's first name will be (fingers crossed so hard for Diana if it's a girl), we do know one thing for certain: The child will not use the same last name as her majesty the queen.
Queen Elizabeth, Prince Philip and Prince Charles all carry the last name Mountbatten-Windsor (a combination of Elizabeth and Philip’s last names). For any non Crown fans in the room, that name is passed on to all the male-line descendants of the queen and Duke of Edinburgh, except for those with royal titles and styles.
For example, Kate Middleton and Prince William, Duke and Duchess of Cambridge, have opted to use their royal title of Cambridge as their children’s surnames instead of Mountbatten-Windsor (probably in order to blend in a tiny bit more into normal society). In school, Prince George is simply George Cambridge, and the same goes for Charlotte and Louis.
Markle and Harry will probably stick to the same conventions by using their titles of Duke and Duchess of Sussex as their surname. So the royal baby will be called [insert first name] Sussex, dropping the “of” and instead adopting the name of the English county.
Prince Charles and Princess Diana followed the same rules, with Harry and William adopting the last name Wales before receiving their dukedoms from the queen upon marriage. Harry and William enrolled in the military and in school using Wales as their last name.
Yep, that’s Harry Wales to you. (We’re not giggling, you are.)