Romeo Antoniazzi was born in Cremona in 1862. He began training as a luthier under his father, Gaetano Antoniazzi. His family moved to Milan in 1870, where he and his brother, Riccardo, worked for Leandro Bisiach and helped to establish the extremely influential Bisiach workshop.
Throughout his career, Romeo worked in many different places and in different workshops. His instruments earned gold and silver medals at the Turin and Paris exhibitions, respectively. Romeo’s instruments are widely admired and have been copied by many other makers.