Meet Prince Louis! Kate Middleton and Prince William Reveal Royal Baby's Name

The name comes with some family history.

Long live Prince Louis of Cambridge!

Prince William and Kate Middleton revealed the name of their newborn son after several days of anticipation.

"The Duke and Duchess of Cambridge are delighted to announce that they have named their son Louis Arthur Charles," Kensington Palace released in a statement. "The baby will be known as His Royal Highness Prince Louis of Cambridge."

Prince Louis (pronounced LEW-ee) is fifth in line to the throne following his grandfather Prince Charles, father Prince William and his two older siblings, Prince George and Princess Charlotte.

The name comes as a surprise as it was widely speculated in the days following his birth that the latest royal baby would be named Albert.

While the name Louis does not have especially strong ties to the British monarchy, it is believed the newborn may be named after Lord Louis Mountbatten, Prince Charles’ great-uncle.

Lord Mountbatten, born in 1900, was a distinguished British Royal Navy officer who fought at sea during World War I and World War II. He was assassinated by the Irish Republican Army (IRA) in 1979 by a bomb placed in his fishing boat.

Prince Louis’ middle name Charles is an homage to his grandfather and Arthur is a middle-name held by both his dad and his grandfather.