[Dilbert San Diego]

So British royalty choose a new name, similar to how the Pope takes a new name for his papacy???

[Dr. Franklin]

So British royalty choose a new name, similar to how the Pope takes a new name for his papacy??

Yes, Edward VIII was previously known as David, and his brother who became George Vi was previously known as Bertie, short for Albert. The royals have more than a first and middle name from which to take as their royal name.