Italian painter, draughtsman and architect. A pupil of Carlo Maratti, he is first documented in 1702, among the restorers of Raphael's fresco decorations (1511-14) in the Vatican. His Tarquinius and Lucretia (c. 1705; Holkham Hall, Norfolk) has cold colours and unnatural gestures that recall Guido Reni. Appointed by Pope Clement XI, between 1710 and 1717 Procaccini supervised the tapestry factory in S Michele a Ripa: the Purification of the Virgin (Rome, Vatican, Consistory Hall) is the only extant tapestry made from a cartoon (untraced) by Maratti and an oil painting (untraced) by Procaccini. The Baptism of Cornelius Centurion (1711; Urbino, S Francesco) for the Baptism Chapel in St Peter's, Rome, was previously attributed to Maratti or Giuseppe Bartolomeo Chiari, but Procaccini apparently based it on sketches supplied by Maratti, who also supervised and revised the work before it was displayed.