DIEGO DE, a Spanish statesman and litterateur, was born of a noble family in the kingdom of Murcia in 1584. After being secretary to Cardinal Borgia, he became ambassador to Rome, and was employed for thirty-four years in numerous negotiations in Italy, Germany, and Switzerland. After being nominated to the supreme council of the Indies in 1646, he subsequently retired to a convent of the Augustinians, where he died in 1648. His works have been collected and published at Antwerp in folio, 1677-78. His most popular production was his Literary Republic.