Born in Lugano, Switzerland, he was a pupil of the painter Camillo Procaccini. In Milan, he painted a Purgatory for the church of San Carlo, and an Adoration of the Magi originally painted for San Marcello is now in the Brera Gallery. Lugano also has some of his works; in the church of Santa Teresa at Como is a picture of that Saint. One of his pupils was Pompeo Ghiti from Brescia.
- Bryan, Michael (1886). Robert Edmund Graves (ed.). Dictionary of Painters and Engravers, Biographical and Critical (Volume I: A-K). York St. #4, Covent Garden, London; Original from Fogg Library, Digitized May 18, 2007: George Bell and Sons. pp. 414–415.CS1 maint: location (link)
- Hobbes, James R. (1849). Picture collector's manual adapted to the professional man, and the amateur. T&W Boone, 29 Bond Street; Digitized by Googlebooks. p. 75.
- Museo Cantonale d'Arte, Lugano: Giovanni Battista Discepoli
- "Discepoli, Giovanni Battista". SIKART Lexicon on art in Switzerland.
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