 He was born in c, the son of Giovanni Fiasella, a silversmith, who, noting his skills apprenticed him as a boy of 11 years to work with Aurelio Lomi in Genoa, and from there he moved to work with Giovanni Battista Paggi.Around 1607 he left for Rome, where he frequented the "Accademia del Nudo".His ability was first recognized by Guido Reni and Ciriaco Mattei, which led Domenico Passignano and Cavalier D'Arpino to employ him.