Marozia, the female senator of Rome, murdered her fair share of popes who also were her lovers and puppets. She finally installed a puppet pope who was a son of hers before she was imprisoned b her elder son, Alberto.http://en.wikipedia.or g/wiki/Marozia<quoted text>
Well, historically speaking, popes typically died of unnatural causes, i.e. poison and thelike.
Some were not so lucky as that, and were murdered by more violent means.
There are stretches where murdering of the previous pope was the best way to become pope yourself-- and many popes (and not a few would-be popes) used that very method.
Of course-- there were also times where there were multiple popes at once.
One has to ask: which one was the infallible one? You cannot have all of them being infallible-- so how to determine which one?
Here's a suggestion: take the New Testament literally, and have them each ingest deadly poison, as the bible commands. And the real pope will live while the imposters are justifiably killed.
In fact, I'd say this would be an excellent test of all current popes, bishops & cardinals too....
Her grandson, son of Alberto, is one your list of the most corrupt popes http://en.wikipedia.org/wiki/Pope_John_XII#Ch...