The pope's mother has no special title. She is simply called the pope's mother. Pope Benedict XVI's mother is named Maria Ratzinger.
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.
Please specify a pope. There have been266 of them.
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.
Which of the 266 popes are you referring to? Please be specific
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".