Reforms of Pope Leo IX in the 1050s (through 1054)

Name: Reforms of Pope Leo IX in the 1050s (through 1054)
Start: 1049
End: 1054

Type Event Region Europe Time 1049–1054

From 1049 to 1054, Leo IX carried out reforms against simony, strengthened papal authority and church discipline, and intervened in ecclesiastical an…

Timeline

1049–1050Rome · LazioAfter his election as pope in 1049, Leo IX promoted anti-simony measures in Rome, regulated the conduct of the clergy, and sought to restore papal authority over local churches and political affairs.
1051–1053Rome · LazioIn the early 1050s, Leo IX continued to advance disciplinary reforms and intervened in episcopal appointments and church governance, provoking tensions with local powers and the Eastern Church.
1054Constantinople · IstanbulIn 1054 Rome and Constantinople formally split over doctrinal and jurisdictional conflicts; Leo IX and the Patriarch of Constantinople excommunicated each other, establishing the Great Schism between the Eastern and Western Churches.

Sources

The Oxford Dictionary of Popes — J. N. D. Kelly (1986)