Generally referred to as a Papal Bull
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.
The Edict of Nantes may be called "an" edict of tolerance, as it promised numerous basic rights and demonstrated tolerance for French Protestants by the king, Henry IV. Signed in 1598, it should not be confused with the Edict of Versailles, signed in 1787 by Louis XVI and more commonly known as the Edict of Tolerance.
Fatwa
There have been 8 popes called Urban.
Proclomation
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.
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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.