The traditional generosity of the Roman Church is again referred to by St. Dionysius of Alexandria to Pope Dionysius in the middle of the third century, and Eusebius says it still continued in his time.
Caius was pope for twelve years, four months, and seven days, from 17 December, 283, to 22 April, 296, according to the Liberian catalogue (Harnack, Chronol., I, 155, after Lipsius and Lightfoot); Eusebius is wrong in giving him fifteen years.
He was buried in the chapel of the popes in that cemetary.
The Pope's role is kind of like that of a chairman of a board, or captain of a football team, with the other team players being the bishops.
Pope Innocent VII (1484-1492) and Pope Leo X (1513-1521) were from the Borgia and Medici families which were kind of like the Sopranos of the middle ages.
Basically, the biggest reason that the Pope was head of his own country is that it is important that the Church not be interferred with by any other political leaders and if the head of the Church was in a country governed by a political leader it would be vulnerable to outside interference.