page_title: Saeculum obscurum
section_title: List of Popes during the saeculum obscurum
hierarchical_section_title: Saeculum obscurum / List of Popes during the saeculum obscurum
caption_attribution_description: Tafel der im Petersdom bestatteten Päpste aus dem Petersdom in Rom, Italien
context_page_description: Saeculum obscurum was a period in the history of the Papacy during the first two-thirds of the 10th century, beginning with the installation of Pope Sergius III in 904 and lasting for sixty 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.
context_section_description: Pope Sergius III (904–911), alleged lover of Marozia
  Pope Anastasius III (911–913)
  Pope Lando (913–914)
  Pope John X (914–928), alleged lover of Theodora (the mother), allegedly killed by Marozia
  Pope Leo VI (928–928)
  Pope Stephen VII (928–931)
  Pope John XI (931–935), son of Marozia, alleged son of Pope Sergius III
  Pope Leo VII (936–939)
  Pope Stephen VIII (939–942)
  Pope Marinus II (942–946)
  Pope Agapetus II (946–955)
  Pope John XII (955–964), grandson of Marozia, by her son Alberic II of Spoleto.
caption: List of Popes, including the names of Popes of the saeculum obscurum buried in St. Peter's Basilica in the Vatican City. Marble slab at the entrance to Sacristia
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