Regarding the John Pauls, they actually had "normal" names, John Paul was strictly a religious designation that they took when they became popes. It's similar

Regarding the John Pauls, they actually had "normal" names, John Paul was strictly a religious designation that they took when they became popes. It's similar with most celebrities, Lady Gaga is known as Lady Gaga by her fans and the media, but she's "Stefani Joanne Angelina Germanotta" to the government and other bureaucratic institutions.