Zacharias Ferreri (1479–1524) was Italian monk and papal legate, Latin poet and ecclesiastical writer. Ferreri was born in Vicenza to a noble family. As a student in Padua, he became a Benedictine monk at the Abbey of Monte Cassino. However, at the age of 25 he left the monastery and moved to Rome. He finished his education receiving master's degrees in law and theology. He served Pope Julius II but soon joined ranks of his opponents and attended the Conciliabulum of Pisa in 1511. For these activities he was excommunicated in 1513. He made peace with the new Pope Leo X and was tasked with preparing a new, shorter and more convenient, edition of the breviary. In 1518 he became titular Bishop of Sebaste in Cilicia and was nominated to become Bishop of Guardialfiera. He refused the nomination