I hope they got pre-approval from the Queen so we can find out ASAP.
Rumor is they had a list of names that they had discussed with family including the Queen but were waiting on the baby's arrival to make a final decision. Royal baby name announcement take days to weeks.
LOL, I doubt the Queen would give the okay to a French royal name for her grandson
Charles' godfather was Louis Mountbatten who he was very close to and was Philip's great uncle. he also set up Elizabeth and Philip so he was an important person to the family. its also one of Williams middle names,