John IV of Constantinople

Saint John the Faster
Born	Constantinople
Died	September 2, 595 Constantinople
Venerated in	Eastern Orthodox Church
Feast	September 2

John IV (died September 2, 595), also known as John Nesteutes (Greek: Ἰωάννης Νηστευτής, "Ioannes the Faster"), was the 33rd bishop or Patriarch of Constantinople (April 11, 582 – 595). He was the first to assume the title Ecumenical Patriarch. He is regarded as a saint by the Eastern Orthodox Church which holds a feast on September 2.