Agostinho Barbosa (Agostino, Augustinus) (17 September 1589, at Aldão, Guimarães, Portugal – 22 March 1649, in Ugento, Italy) was a prolific Portuguese writer on canon law. His work included dictionary-type surveys of the legal elements.
Having studied canon law in Portugal, he went to Rome. Being without books, he memorized books in libraries. About 1632 he went to Madrid, where he applied himself to writing and fulfilled various duties confided to him till 1648. consecrated Bishop of Ugento in Rome, on 22 March 1649.
His works fill at least 30 volumes. They show intimate acquaintance with authors, sources, and controversial questions such as the following:
All the canonical works of Barbosa were published at Lyons, 1657–75, in 19 vols. In quinto, 16 vols. in folio, and again, 1698–1716, 20 vols. in quinto, 18 vols. in folio.
This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "". Catholic Encyclopedia. New York: Robert Appleton.