However, the name Louis according to CNN does not have a strong British royal pedigree, being more commonly associated with kings of France.
His death left the royal family in shock, as "Lord Louis" had been a mentor to not only Philip but also Prince Charles as well.
Kate and Wills rang me and asked if it was alright for them to call the baby Louis after my son. Not to mention, Prince Louis' third name of Charles is likely in honor of Prince Charles, Queen Elizabeth II's heir apparent (and the kiddo's grandpa). His full name is Edward Antony Richard Louis.
"My Louis was known as pooey Louis for the first few years of his life!" joked Linda.
The Duke and Duchess of Cambridge are a favorite royal couple for people around the world, and, although they are keeping mum about their plans for the big day, here's wishing them a very happy anniversary.
Aung San Suu Kyi meets United Nations team investigating Rohingya crisis
Suu Kyi's office also said in a statement that cooperation was needed from Bangladesh on the repatriation of refugees. The refugees said that without guaranteed citizenship and rights to move freely, they would not return to Rakhine.
Prince Louis became the third child of Prince William and Duchess Catherine - previously known as Kate Middleton - when he was born in London on Monday (23.04.18). Prince William and Kate's newest addition is named after Lord Louis Mountbatten, a British naval officer with a royal connection.
Both Louis's father William and grandfather Charles have the name as one of their middle names.
One of the Duke of Cambridge's own names is Louis after the Duke of Edinburgh's uncle Earl Mountbatten of Burma who was killed in 1979. George III's son William IV took the throne when his brother George IV died without any legitimate children in 1830. William and Charles have Arthur as their middle name.
It's thought George and Charlotte will serve as page boy and flower girl, but that's yet to be confirmed by the palace. Eventually, Louis got in on the joke himself, tweeting, "Young Louis welcome to the world".