Prince William and Kate Middleton Celebrate 7th Anniversary with Sweet Throwback Photo

  • Prince William and Kate Middleton Celebrate 7th Anniversary with Sweet Throwback Photo

Prince William and Kate Middleton Celebrate 7th Anniversary with Sweet Throwback Photo

William and Kate's third child was born Monday, a brother to 4-year-old Prince George and Princess Charlotte, who is nearly 3.

Kate's new baby will be fifth in line to the throne after Charles, William, George and Charlotte.

While many associate the royal baby name Louis with French kings, it had a link to the British Royal Family too.

Betting agencies had been monitoring the royal couple's every move leading up to Louis's arrival, with odds rapidly changing when hints were dropped they were having a boy, then with speculation on strong name contenders Arthur and Albert.

Duchess Kate began her maternity leave in March, just one month before Prince Louis' birth. Arthur is also a name shared by the Duke of Cambridge and his father and Charles is, obviously the Prince of Wales's own name. Both Prince Charles and Prince William have Arthur as middle names.

"Louis Mountbatten is someone who Prince William himself never knew but at the same time he has remained a very important figure in terms of the impact he had on Prince Charles' life". In 2010, Prince William popped the question with a stunning sapphire and diamond engagement ring that once belonged to his mother, the late Princess Diana.

They already have a boy, Prince George, born in 2013, and a girl, Princess Charlotte, born in 2015.

The offer is valid from 27 April, the day Prince Louis's name was announced, until 19 July.

It's a touching nod to Lord Louis Mountbatten, Prince Charles's beloved great-uncle and mentor who was killed by the IRA almost 40 years ago.

April 29, 2011 - Marries Prince William, the Duke of Cambridge at Westminster Abbey and becomes Her Royal Highness the Duchess of Cambridge.

Some were reminded of another, more simian, royal Louis.

And the little prince's namesake, Louis Tomlinson, was clearly impressed, taking to Twitter to joke: "Young Louis welcome to the world".

Grandpa Charles, who returned home from an official visit to France on Thursday, and uncle Prince Harry and aunt-to-be Meghan Markle, who also live in Kensington Palace.

Not only that, but if Charlotte had been born first, she still would've missed out on being a Princess.

The couple drove to the private Lindo Wing at St Mary's Hospital in Paddington from their apartment at Kensington Palace.