He was born in Bologna. He painted an Annunciation for the church of San Benedetto, a Conversion of St. Paul and a Christ in the Garden for San Giacomo Maggiore, a St. Michael defeating the rebel Angels for San Bernardo, and a Deposition from the Cross for the church of Santo Stefano. Ercole established an Academy at Milan, which became celebrated in his time, and, besides his own sons (Carlo Antonio, Giulio Cesare and Camillo turned out distinguished artists of the Milan school. The painter Ercole Procaccini the Younger was Carlo Antonio's son.
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- Bryan, Michael (1889). Walter Armstrong & Robert Edmund Graves (ed.). Dictionary of Painters and Engravers, Biographical and Critical (Volume II L-Z). York St. #4, Covent Garden, London; Original from Fogg Library, Digitized May 18, 2007: George Bell and Sons. p. 324.CS1 maint: location (link)