‘Pope St John ruled the Church from 523 to 526. He travelled to Constantinople to seek aid from Emperor Justinian II against the Arian king, Theodoric. On his return, Theodoric invited him to Ravenna; upon his arrival he was seized and thrown into prison, where in the midst of filth and hunger, he died on May 18, 526. His body was transferred to St Peter’s, Rome. Pope John’s efforts to further the veneration of martyrs were well rewarded. When he visited the Emperor at Constantinople, the Greeks acknowledged the primacy of the Roman see. From his hands Justinian accepted the Emperor’s crown, and on the feast of Easter he celebrated Mass there according to the Roman rite’.
from The Church’s Year of Grace, 1953, by Pius Parsch, 1884-1954
O everlasting Shepherd, mercifully look upon thy flock: and through blessed John, thy Martyr and Supreme Pontiff, whom thou didst appoint to be shepherd of the whole Church, keep her with thy perpetual protection; through Jesus Christ thy Son our Lord, who liveth and reigneth with thee, in the unity of the Holy Ghost, ever one God, world without end. Amen. - Divine Worship: The Missal.
Fr Lee Kenyon