"It's a strong name. 'Prince George of Cambridge' sounds good, very resonant with the queen's family," said Charles Kidd, editor of Debrett's Peerage & Baronetage.
The length of the name, however, appeared to be something of a nod to the 21st century - despite the "HRH" in front of it. Four names, not three, Kidd said, have "become the standard norm for members of the royal family in recent generations." William has four, as does his father, Prince Charles. So by royal standards, "George Alexander Louis" is relatively concise.
"Louis," royal-watchers said, was picked at least in part as a tribute to Louis Mountbatten, Charles' beloved great-uncle, killed when an Irish Republican Army bomb blew up his boat in 1979. "Louis" is also one of William's names.
The BBC speculated that "Alexander" may have been a preference on the Middleton side.
It took Charles and Diana a good week to name William. So the wait for the newest heir's name was comparatively short. Here, the naming of heirs is a serious matter, with the monikers of British kings and queens defining entire eras as well as periods of fashion, writing, and architecture.
But Judy Wade, correspondent for Hello! magazine, noted that typically, only popular monarchs earn a name for their age.
Not everyone appeared immediately thrilled with the name George. Its popularity in betting pools meant that gambling houses across Britain were on the hook for hundreds of thousands of dollars.
"We've been left with a royal flush," said Rory Scott, with the bookmaker Paddy Power.
"William and Kate wanted a modern name, but they have 1,000 years of history to respect. I think the queen would probably approve of 'George,' don't you?"
Earlier in the day, Queen Elizabeth II was driven to Kensington Palace to see her great-grandson, becoming the first reigning British monarch since Queen Victoria to meet a third-generation direct heir.