Saeculum obscurum, also known as the Pornocracy or the Rule of the Harlots, was a period in the history of the papacy during the first two thirds of the 10th century, following the chaos after the death of Pope Formosus in 896 which saw seven or eight papal elections in as many years. It began with the installation of Pope Sergius III in 904 and lasted for 60 years until the death of Pope John XII in 964. During this period, the popes were influenced strongly by a powerful and allegedly corrupt aristocratic family, the Theophylacti, and their relatives and allies. The era is seen as one of the lowest points of the history of the papal office.
1742 print of the corpse of John XII, one of the most infamous popes, being carried by a crowd
Europe in 912 AD, around the start of the Pornocracy
According to Roman Catholicism, the history of the papacy, the office held by the pope as head of the Catholic Church, spans from the time of Peter to the present day.
According to Catholic doctrine, the popes are successors of Saint Peter (kneeling, right)
Raphael's The Baptism of Constantine depicts Sylvester I instead of his actual baptizer Eusebius of Nicomedia, an Arian bishop.
Justinian I re-conquered Rome and appointed the next three popes.
The papal palace in Viterbo...