As for centuries now the Pope has been a pretty elderly man when elected (save John Paul II who was in his late 50's), usually the Pope's father is deceased.
Bishop of Rome is another title for the pope, as is Holy Father. -- and -- Pontiff is another word for Pope
Yes, there have been several popes that were related - one father and son and several popes had nephews who were elected as pope.
There have been 13 popes called Leo, and there appears to be no dispute about the numbering, as is the case with a few of the popes. See links.
There have been 8 popes called Urban.
Avignon, France, is sometimes referred to as the "City of Popes" because of the presence of popes and anti-popes from 1309 to 1423 during the Catholic schism.
There have been 13 popes named Innocent.
Yes, they had many differences on matters of authority and doctrine. Some Popes were even excommunicated by Church Synods (or Councils) and other rival Popes were elected in their place, called Ante-Popes.
There have been 6 popes who chose the name of Paul.
Popes & Patriarchs.
There have been 15 popes named Benedict. Pope Benedict X does not count as he was an antipope.
Generally referred to as a Papal Bull
It wasn't Monty Python - it was an SCTV sketch called "The Man Who Would Be King of the Popes".