John IV of Constantinople

John IV of Constantinople, also known as John Nesteutes, was a prominent figure in the early Christian church, serving as the patriarch of Constantinople from twelve April five hundred eighty-two until his death on two September five hundred ninety-five. His tenure marked a significant period in the history of the Eastern Orthodox Church.

As the first to adopt the title of Ecumenical Patriarch, John IV played a crucial role in shaping the ecclesiastical landscape of his time. His leadership was characterized by a commitment to the spiritual and administrative needs of the church, which helped to solidify the authority of the patriarchate in Constantinople.

John IV is venerated as a saint by the Eastern Orthodox Church, which commemorates his life and contributions with a feast on the anniversary of his passing, two September. His legacy continues to influence the church and its followers, reflecting the enduring impact of his work.