Saeculum obscurum (Ecclesiastical Latin: [ˈsɛː.ku.lu.m obsˈkuː.rum], "the dark age/century"), 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.
The saeculum obscurum was first named and identified as a period of papal immorality by the Italian cardinal and historian Caesar Baronius in his Annales Ecclesiastici in the 16th century.
They held positions of increased importance in the Roman nobility, such as iudex ("judge"), vestararius, gloriosissimus dux ("most-glorious duke"), consul, senator, and magister militum.
Liutprand took part in the Assembly of Bishops which deposed Pope John XII and was a political enemy of the Roman aristocracy and its control over papal elections.
Others ordered the rebuilding and restoration of Rome's churches and palaces ... Rather, it is the manner of the election of many of them and their symbiotic relationship with the Roman aristocracy that has earned their regime the designation pornocracy.