(Giovanni Battista), called Cavalier Beinacchi, history painter, was a Piedmontese, and born in 1634. He studied in Rome, under the direction of Pietro del Po; and some authors affirm, that he was afterwards the disciple of Lanfranc. It is certain that he was peculiarly fond of the works of Lanfranc, and at last became so thoroughly acquainted with the style, manner, and touch of that excellent master, than many of the pictures of Beinacchi are at this day accounted the work of Lanfranc's own hand. He was an admirable designer; his lively invention furnished him with a surprising variety; his thought was noble; he was not only expeditious but correct; and as a public acknowledgment of his merit, the honour of knighthood was conferred upon him.