In 1054, Pope Leo IX passed away in Rome, Italy, marking a significant turning point in the Catholic Church. His papacy was characterized by efforts to reform the church and strengthen its authority, which had lasting implications for the Christian world. The death of Leo IX also set the stage for the Great Schism of 1054, which divided the Eastern Orthodox and Roman Catholic Churches, a schism that would influence Christian theology and culture for centuries to come.

The Great Schism had profound effects on Christian literature and poetry, inspiring works that explored themes of faith, division, and reconciliation. Poets like Dante Alighieri, centuries later, would reflect on the consequences of this schism in his epic 'Divine Comedy', illustrating the cultural and spiritual rifts that emerged from this pivotal moment in history. The theological debates that arose also enriched the language and imagery used in religious poetry.