So there you have it, may we never argue over how to pronounce the baby prince's name ever again.
"Louis Mountbatten... was Prince Philip's uncle and pretty much his father", said Profe Kate Williams, royal history expert at the University of Reading.
"Louis is a little surprising on one level because it's not a strong Anglo-Saxon, British name, and that has been what the royal family has tended to go for". Furthermore, Louis is indeed a family name and is both Prince William and Prince George's middle names. It has been reported that Catherine and William will travel to Windsor Castle over the weekend with their new baby, to see the monarch and Prince Philip.
The name Louis is of French and German origin and means "famous in battle" and "famous warrior".
But one important visitor has as yet been unable to meet his new grandson - Prince Charles. "The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news", Kensington Palace's Twitter feed announced shortly after the new royal's arrival. George was named after Queen Elizabeth's beloved father, King George, who died when she was just 26-years-old.
As is tradition, the new parents-of-three made their first appearance with the tiny prince mere hours (seven, to be exact) after Middleton gave birth.More news: New Map Landmarks and Hidden Locations in Fortnite Season 4
So it was unsurprising that conventional names were the favorites of the bookies before the latest announcement.
"It's unlikely they'll be asleep when William and Kate arrive home". The Duke of Cambridge was present for the birth.
The new prince weighed in at 8 lbs., 7 oz., Kensington Palace tweeted.
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.
Across the Channel, Prince Louis received an enthusiastic response.
It was signed today by Prince William.