a Jesuit, and friend of pope Clement XI, was born in 1670. He accompanied the nephew of the pope, Albani, to Germany and Poland as theological adviser, and succeeded in converting Frederick Augustus of Saxony to the Church of Rome. In acknowledgment of this deed John Baptist was made cardinal, and died in 1729. He is the author of Specimen Orientalis Ecclesice (Rome, 1706). See Lichtenberger, Encyclop. des Sciences Religieuses, s.v. (B.P.)