Leo ix is considered to be one of the most historically significant popes of the middle ages He was instrumental in the precipitation of the great schism of 1054, considered the turning point in which the catholic and eastern orthodox churches formally separated. The events of 1054 that divided the church tensions reached their peak in the spring to summer of 1054 In april 1054, pope leo ix’s representative, cardinal humbert, henry of silva candida, arrived in constantinople to meet patriarch michael cerularius. On july 16, 1054, cardinal humbert marched into constantinople's magnificent hagia sophia during the divine liturgy As shocked worshippers watched, he placed a papal bull on the altar excommunicating the patriarch.
In 1054, pope leo ix sent an emissary, cardinal humbert, from rome to constantinople The cardinal's visit with patriarch cerularios was meant to be a mission of conciliation. In 1054, pope lev sent a message to kerularii, which, in support of the papal claims to complete power in the church, contained extensive extracts from a fake document known as the dowry of constantine, insisting on its authenticity. Great schism of 1054, a rupture between the western church, led by the pope of rome, and the eastern church, headed by the patriarch of constantinople This schism not only divided christianity into two major branches but also left deep wounds that are still felt today. The great schism of 1054 was the formal split between the christian churches of the latin west and the greek east
The split is conventionally dated to 1054, when a series of actions led the church leaders in rome and constantinople.
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