The name Louis is of French and German origin and means "famous in battle" and "famous warrior".
Louis Arthur Charles, was the name given to the baby who is less than a week old and is already an global superstar. "With it being one of Prince George's middle names fans didn't see it as an obvious front runner for Kate and Wills second son".
In the same vein as Prince George and Princess Charlotte, the British design brand have produced a cutesy mug to celebrate the newest Royal edition.
Prince Louis of Cambridge was very almost not a Prince at all. The newlyweds left their wedding reception dark blue vintage Aston Martin Volante that belonged to Prince Charles. The name George has echoed throughout royal history with King George VI being the last to wear the crown. "The baby will be known as His Royal Highness Prince Louis of Cambridge", it said.More news: Sabres win National Hockey League draft lottery, eye Dahlin
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This causes confusion as William's mother Diana was often referred to as princess when she married into the royal family.
The couple - who also have Prince George, four, and two-year-old Princess Charlotte - announced the name of the Prince on Friday (04.27.18).
Prince William's uncle Prince Edward also has Louis in his full name, Edward Antony Richard Louis. Hours later, she and Prince William publicly debuted their third child on the stairs of the Lindo Wing in London.
In Pics: Queen Margrethe poses with her brood on her 76th birthday.Since 1513, Denmark has alternated between only two royal names - Frederick and Christian.
He also took a break from caring for the prince to carry out royal duties on Wednesday when he joined Harry and Meghan Markle at an Anzac Day service in London.
Kate's sister Pippa recently announced she was pregnant with her first child.