His editions, especially that of 1546, containing a new translation at the side of the Vulgate, was the subject of sharp and acrimonious criticism from the clergy. In 1539 he received the distinguishing title of "Printer to the king" for Latin and Hebrew, and later for Greek. This incited anger from the Sorbonne because Estienne had converted from Catholicism to Protestantism. The Sorbonne was opposed to the humanist ideals of the time and was attempting to censor Estienne's publishing firm. He was protected by Francis I of France with whom he enjoyed strong patronage and friendship; Estienne aided Francis I in printing documents ratifying policies which established and justified his power. Later, Estienne published a document to inform the public how alliances between French royalty, German Protestants, and Turkish royalty were beneficial for European religious peace. In 1538, Francis I requested that Estienne give a copy of every Greek book he had printed to create the royal library, which became the first copyright library. However, after Francis I died in 1547 and was succeeded by Henry II, Estienne fled to Geneva around 1550. With him, he brought his printing material, including his Greek type made by Garamond.