Reigned from 523 to 526. Born in Tuscany, Italy; died in Ravenna, Italy. He was obliged by Theodoric, King of the Ostrogoths and of Italy, to head an embassy sent by Theodoric to Constantinople, 525, to secure a mitigation in the persecution of the Arians. He was accorded a brilliant reception by Emperor Justin and said Mass according to the Latin Rite in the church of Saint Sophia. That he did not press the cause of the Arians further than counseling discretion and gentleness on the part of the emperor is proved by his subsequent abuse at the hands of Theodoric who incarcerated him at Ravenna, where he died. Feast, Roman Calendar, 27 May.
- “Pope Saint John I”. . CatholicSaints.Info. 31 August 2013. Web. 29 November 2015. <>