The Duke and Duchess of Sussex welcomed their first child Archie, almost two years ago and the couple are set to have their second, a little girl, later this year.
The baby will most likely have the same surname as her brother, which is Mountbatten-Windsor.
This is the Royal Family’s official surname used by all members who don’t have a title.
According to the Royal.uk website, the surname didn’t appear on an official document until 1973, but the complicated story behind the name dates all the way back to 1952 and is believed to have been the topic of a huge row between Prince Philip and several other key figures.

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Before he married The Queen and became the Duke of Edinburgh, Philip was known as Prince Philip of Greece and Denmark of the House of Schleswig-Holstein-Sonderburg-Glücksburg.
However, his name wasn’t considered to be neutral enough so he adopted the name Mountbatten after his grandparents.
When the then Princess Elizabeth had the couple’s first child, Prince Charles, in 1948, he assumed, due to tradition, that their little one would take his name.
However, when Elizabeth went on to become Queen in 1952, she had to confirm the official surname of the Royal Family and many wanted her to continue using Windsor, instead of changing it to Mountbatten.
Winston Churchill is said to have been an advocate for the Royals using the name…