St. John I was Pope from 523-526.  He was very frail when he was elected to the papacy. Despite his protests, Pope John was sent by the Arian King Theoderic the Great—ruler of the Ostrogoths, a kingdom in present-day Italy—to Constantinople to secure a moderation of a decree against the Arians, issued in 523, of Emperor Justin, ruler of the Byzantine, or East Roman, Empire....