pope INNOCENT VI
Pope Innocent VI (1282 or 1295 – 1362), born Étienne Aubert, was head of the Catholic Church and ruler of the Papal States from 18 December 1352 to his death in 1362. He was the fifth Avignon pope and the only one with the pontifical name of "Innocent".
The song Ave verum Corpus [Christi], a Eucharistic hymn most famously put to music by Mozart, is commonly attributed to Pope Innocent VI. It was sung during the elevation of the Host at Mass in the Middle Ages, and was also sometimes used during Benediction. Today is mostly used for the Feast of Corpus Christi liturgy use.