Welcome Prince George!
We have a name! The new little Prince of Cambridge will go by the names George Alexander Louis.
From USA TODAY : He is named for his great great grandfather George VI, father of Queen Elizabeth II. Louis comes from Prince Philip's uncle, Lord Louis Mountbatten. Alexander could be either a reference to old kings of Scotland, or it's the male version of Alexandria, a top girl name contender and the name of a past queen consort and one of the baby's ancestors.
Congrats to the new family!