- One obvious link is with Prince Louis' grandfather, Prince Charles, while the name may also be a tribute to Louis Mountbatten, Prince Philip's uncle and mentor.
- The baby is fifth in line to the throne, bumping Prince Harry into sixth place.
The new royal baby is called Louis — here's why
Royal observers suggest Louis Arthur Charles honours the young Prince's relatives, past and present.
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Prince William and Kate Middleton have called their third child Louis Arthur Charles — and it is likely to be a nod to the young Prince's relatives, past and present.
The Duke and Duchess of Cambridge revealed the name on Friday and it didn't take long for royal observers, including at The Daily Telegraph and The Guardian, to identify its lineage.
One obvious link is with Prince Louis' grandfather, Prince Charles, while the name may also be a tribute to Louis Mountbatten.
Mountbatten was Duke of Edinburgh Prince Philip's uncle and mentor. He encouraged his nephew to marry Queen Elizabeth, and was considered an "honorary grandfather" by Prince Charles, according to the MailOnline. Mountbatten was killed by an IRA bomb in 1979.
Louis is also the middle name of both Prince William and his eldest son Prince George. Their full names are William Arthur Philip Louis and George Alexander Louis respectively.