The Pope is the Supreme Head of the Roman Catholic Church, Jesus Christ's deputy on Earth, and cannot be removed from office. His word is regarded by the Church as infallible, equivalent in effect to the Holy Scriptures. At the time of our game, however, nothing was quite so straightforward. Due to the Papal Schism that lasted from 1378 to 1417, there were for a time as many as three rival claimants to the Throne of St. Peter. For secular rulers, support for one claimant or the other was often less a question of faith than of political convenience.