Reading history about popes and from where they came and what they did is the most interesting of all , it encompasses riches, power greed, murder, mayhem, lust and lets not for the Borgias.  While father became Pope he had to compete with his two sons who would be the first to bed his daughter Lucretia.
All religious history based on true accounting of all faiths on this planet  is nothing more then murder, lust, power, warlords etc.