The Duke and Duchess of Cambridge's third child was born this morning at 11:01, weighing 8lbs 7oz. Speculation was correct and Clarence House confirms the news we had been waiting for. Charles is also one of Prince Harry's middle names.
The baby is Britain's first Prince Louis in more than a century. Mountbatten had been 79 years old when the IRA detonated a bomb on his boat that August; he and three others were killed, including Mountbatten's grandson.
Speaking to ITV News Prince William said he was "thrilled and delighted" to be given the position.
The name Louis, though, is steeped in history, having being adopted by 18 French kings beginning with Louis I the Pious in 840 and ending with Louis XVIII in 1824.
Louis is now fifth-in-line to throne.
The new baby is the third child for the couple - they already have four-year-old George (George Alexander Louis) and two-year-old Charlotte (Charlotte Elizabeth Diana), who are third and fourth in-line to the throne respectively.
"What's interesting about this name choice is that it's heavily influenced by the boy's grandfather, Prince Charles", Linda Rosenkrantz, co-founder of Nameberry, told Yahoo Lifestyle.
Prince William and Kate Middleton have finally revealed the royal baby's name.
The couple first met when they were students at the University of St. Andrews.
The cost of raising a princess and two princes is a bit heir-raising.
'Her Royal Highness and her child are both doing well'.
Princess Diana wasn't technically a princess as she became part of the royal family by marrying in like Kate.
Author J.K. Rowling's digital publishing company Pottermore noted that the Weasley family in the Harry Potter books had members named Louis, Arthur and Charles. "Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 1101hrs". They publicly thanked well-wishers by sending thank you cards, which featured a attractive and previously unseen photo of the couple in their garden.