That's actually a debatable element of history in the bible, Hamlet. It's not an all agreed-upon, case-closed factoid. Notwithstanding that Bible preachers love to talk about history, and many do bring up that point of John possibly talking about Nero.

No one knows who and exactly what John was refering to other than what's said in the text. Going beyond that is getting into some kind of Dan Brown novel.
Nylo Reviewed by Nylo on . MICROCHIP IMPLANT , MARK OF THE BEAST AN HE CAUSETHALL,BOTH SMALL AN GREAT,RICHAN POOR,FREEAN BOND,TO RECIEVE A MARKIN THEIR RIGHT HAND,OR IN THEIR FOREHEADS Rating: 5