Saint Pope Hormisdas (†523) was the bishop of Rome from 20 July 514 to his death. His papacy was dominated by the Acacian schism, started in 484 by Acacius of Constantinople's efforts to placate the Monophysites. His efforts to resolve this schism were successful, and the reunion between Constantinople and Rome was ratified in the cathedral of Constantinople before a large crowd. Saint Pope Hormisdas was canonized Pre-Congregation and his feast day is celebrated on August 6.
Saint Pope John I (†526) was the bishop of Rome from 13 August 523 to his death. He was sent on a diplomatic mission to Constantinople by the Ostrogoth King Theoderic to negotiate better treatment for Arians. Although John was relatively successful, upon his return to Ravenna, Theoderic had him imprisoned for allegedly conspiring with Constantinople. The frail pope died of neglect and ill-treatment. Saint Pope John I was canonized Pre-Congregation and his feast day is celebrated on 18 May.