Edward VII was nicknamed “Bertie”, as his full name was Albert Edward. British sovereigns are allowed to choose the name by which they are to be known as during their reign. The name is usually chosen amongst their given names. Victoria, given the names Alexandrina Victoria, chose to be known as “Victoria”. She had hoped her son would take the name Albert Edward when he became king. He disagreed, finding the choice of two names for a sovereign not quite British.  Two of Bertie’s grandsons became kings, and were known to their families by the given names David and Albert. Both men chose other names when they became king, and are known to use as Edward VIII and George VI, respectively.  It is suspected that the current Prince of Wales, Charles, is considering taking the name of George when he becomes king. If he does, you can have fun explaining the logic to your friends.