Francesco Bertos was an Italian sculptor known for his emotive and virtuosic small-scale pyramidal group sculpture.
Historical records indicate his presence in Rome in 1693 and in Venice in 1710, with his activity documented until 1733 when he received a commission for two candlesticks for the basilica of Sant'Antonio (il Santo) in Padua.
[2] Bertos' sculptures gained popularity among 18th-century Italians and tourists visiting Italy, finding their way into various collections in Europe and North America, including the Metropolitan Museum of Art in New York City.
[2] The nearly two meter high Carrera marble sculpture “La caduta degli angeli ribelli” (The fall of the rebel angels) located in Vicenza’s Palazzo Leoni Montanari is now identified as another of his works.
https://gallerieditalia.com/it/vicenza/il-museo/ Bertos' sculpture gained popularity for its ability to create the illusion of weightlessness despite being crafted in bronze or marble.