What's in a name? Meghan Markle and Prince Harry stunned the world when they announced their newborn son's name: Archie Harrison Mountbatten-Windsor. Prior to the reveal Wednesday, Arthur had been a heavy favorite. Many had expected a more traditional name, but Archie is actually quite a popular name in Britain, where it was among the top 25 most common boys' names in 2017. And while little Archie does not have a royal title right now, he could in the future.