Now that the name of the new royal baby has been revealed – Louis Arthur Charles – speculation has begun about the meaning of each moniker.
Digital Wizarding World Pottermore (a website dedicated to Harry Potter) said on Friday that each of the three names has meaning for a beloved Harry Potter family. "Louis Arthur Charles, you were named after three legendary Weasleys … #RoyalBabyName ," tweeted Pottermore in response to the announcement from Kensington Palace.
Arthur is the patriarch of the Weasley clan, while Charles (aka Charlie) is one of Ron's older brothers. Louis is the name of Fleur and Bill's youngest son.
New parents Prince William and Kate Middleton have shown interest in the Harry Potter franchise in the past and made a 2013 visit to the Warner Bros. London studio tour – The Making Of Harry Potter. Kate, who was pregnant with Prince George at the time, and Prince William even got into a wand duel and checked Diagon Alley with Prince Harry.
Apart from the Harry Potter connection, Louis (pronounced "LU-EE") is likely a tribute to Prince Philip, whose grandfather was Prince Louis Alexander von Battenberg. Louis is also a part of Prince William the full name of William Arthur Philip Louis and Prince George the full name of George Alexander Louis. The name plays an important role in Williams' own father, Prince Charles, whose beloved great-uncle and mentor, Earl Louis Mountbatten, was assassinated in 1979 by the IRA.
RELATED VIDEO: Royal Baby No. 3 has arrived!  The middle names of Charles and Arthur also have a special meaning. Charles is, of course, in honor of the boy's grandfather, Prince Charles. The name Arthur is also a family tradition: Both Papa William and Grandfather Charles have it as a second name. Arthur was also the name of the third son of Queen Victoria (and the seventh child) and was considered her favorite child.
"During her lifetime, Queen Victoria wanted all her male descendants to include Albert in their boys' names." Joe Little, editor-in-chief of Majesty magazine, tells PEOPLE. "Twice the choice of Louis would have been the couple's choice – they clearly consider it a nice name."