Placido Costanzi was born in 1702 to a family of gem-makers in Rome. He was exposed to art at a very young age, and became a pupil of Benedetto Luti and painted mainly historical and devotional subjects.
He painted a St. Camillus in Santa Maria Maddalena in Florence, in which he has aspired to the imitation of Domenichino. Many of his works decorate Rome's churches. His Resuscitation of Tabitha in Santa Maria degli Angeli e dei Martiri replicates a mosaic in St. Peter's Basilica. He also painted in fresco the ceilings of the tribunes in Santa Maria in Vallicella and San Gregorio, and was much employed in painting figures in the landscapes of other artists, particularly in those of Jan Frans van Bloemen (also known as "Orizzonte", which means horizon in Italian).
- 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. p. 316.
- Getty biography and Getty database record
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