Pietro Bembo, (born May 20, 1470, Venice--died January 18, 1547, Rome), Renaissance cardinal who wrote one of the earliest Italian grammars and assisted in establishing the Italian literary language.
Of an aristocratic family, Bembo was educated principally by his father, a man of great authority in the Venetian republic. In 1513 the son became secretary to Pope Leo X in Rome. On Leo's death (1521), he retired to Padua. He accepted the office of historiographer of Venice in 1529 and began writing a history of that city; he was also appointed librarian of St. Mark's Cathedral. Created a cardinal in 1539, Bembo returned to Rome, where he devoted himself to theology and classical history.
Bembo wrote Latin lyric poetry of formal excellence and then turned to the vernacular, modeling his poetry on that of Petrarch. His way of making direct imitations of Petrarch was widely influential and became known as bembismo. A collected edition of his Italian poems, Rime, appeared in 1530. His other vernacular works include Gli Asolani (1505), dialogues on platonic love, the systemization of which influenced Ludovico Ariosto, Baldassare Castiglione, and Torquato Tasso; and Prose della volgar lingua (1525; "Discussions of the Vernacular Language"). In the Prose, Bembo codified Italian orthography and grammar, essential for the establishment of a standard language, and recommended 14th-century Tuscan as the model for Italian literary language. His view, opposed by those who wanted Latin and by others who wanted a more modern Italian as the model, had triumphed by the end of the 16th century. Bembo's history of Venice, which he wrote in Latin and in Italian, was published posthumously (in Latin in 1551 and in Italian in 1552).