A tweet from the palace has confirmed that the prince has been given the name Louis Arthur Charles and will be known as His Royal Highness Prince Louis of Cambridge.
Bookmakers showed the first name, which is one of Prince George’s middle names, tied at 2:1 with Arthur.
Louis Arthur Charles is fifth in line to the throne and was delivered at 11:01 am on Monday April 23rd weighing 8 lbs 7 oz.
The Duke of Cambridge was present for the birth, which took place at the Lindo Wing of St. Mary’s Hospital where George and Charlotte were also born. Later he brought Princess Charlotte and Prince George to hospital to meet their new baby brother.
In a statement via Twitter, Kensington Palace said: ‘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.’
Hundreds of supporters gathered outside the Lindo Wing to catch a glimpse of the family as they welcomed the new baby to the world.
By early evening, the new Royal had been seen around the world as his parents took him home to Kensington Palace hours after his birth.
The Queen’s sixth great-grandchild has officially taken his place in the line of succession behind his grandfather Prince Charles, father Prince William, brother Prince George and sister Princess Charlotte.
Well wishes have been pouring in via Twitter from across the world including from British Prime Minister Theresa May and London Mayor Sadiq Khan.
The tiniest royal, Prince Louis, arrived on St. George’s Day, just 26 days before his Uncle Prince William and future Aunt Meghan Markle’s Royal Wedding on 19th May.