Born in Perigod, France, around 1305, Saint Peter Thomas joined the Carmelite Order when twenty years of age. He was Procurator General of the Order at the Papal Curia at Avignon and also an official preacher to the Curia there. In 1354, he was appointed bishop of Patti and Lipari. He acted as papal legate to the kings and emperors of his time, seeking to promote peace and to re-establish unity with the Eastern Churches. He was translated to other episcopal sees: in 1359 to that of Corinth in the Pelopennese with the role of papal legate in the East; then to Crete as archbishop in 1363 and finally to Constantinople in 1364 as Latin Patriarch. His efforts for the unity of the Church make this fourteenth century saint a precursor of ecumenism. He died in 1366 at Famagusta in Cyprus.