This period began in 1204 with the installation in the see of a Catholic archbishop following the Fourth Crusade,[1][2] while the Orthodox metropolitan bishop fled the city.
The archbishopric survived as a Latin residential see until 1456, when the duchy fell to the Ottoman Empire.
[4] Like other Latin sees in the Latin states of Greece, the names and dates of election of the incumbents during the first century of its existence are unknown, as they were rarely communicated to the papal court.
[5] Along with many of his counterparts from other Latin sees of Greece, the anonymous archbishop of Thebes participated in the Fourth Council of the Lateran in 1215.
[6] In 1217–18 the archbishop was engaged in a dispute with the Latin Patriarch of Constantinople, Gervasius, who claimed direct jurisdiction over the monasteries in the duchy of Athens and intervened in the administration of the Thebean archdiocese.