Stories We Like: A Guide to the Comma
Byzantine emperor whose reign marked a transition between the period of Iconoclasm and the restoration of the icons
pope from August to September 903. Elected while a priest to succeed Pope Benedict IV, Leo assumed the pontificate in a dark period of papal history. He was deposed and imprisoned by the antipope Christopher. Leo was perhaps murdered, either by Christopher or his successor, Pope Sergius III (904-911).
pope from May to December 928. He was Pope John VIII's prime minister and later a cardinal priest when elected by the senatrix Marozia, then head of the powerful Roman Crescentii family, who deposed and imprisoned Leo's predecessor, Pope John X. His principal act was the regulation of the jurisdiction of the hierarchy in Dalmatia.