Modern popes do not bear a crozier (a bent pastoral staff styled after a shepherd's crook), but rather bear the Papal Cross, a staff topped by a crucifix.
In other words, it is called a Papal Cross. And they used to carry one called a crozier.
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 it is but cane is short for primocane.
Sugar made with sugar cane stalks is called cane sugar.
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.
Stacked Leather cane
There have been 6 popes who chose the name of Paul.
Popes & Patriarchs.
It is called the sap.
cane toad