Career
He was a resident in Como. He exhibited Louisiana mèsse and Incitazione, at the Mostra Nazionale of Naples of 1877, and in 1880 to Milan, he sent a marble group titled: Good Morning, and two puttini: Titubante e Impermalito. The same group and one of two putti were exhibited again in 1881 in Milan.
Other works del Trombetta are the thousands of graceful putti in all manner of expression.
He often worked in clay. The Modern Art Gallery of Milan displays a relief titled Dante and Casella (1869) He completed the wooden statue of the title saint for the church of San Donnino in Como he completed the bust of Garibaldi for the Asilo Garibaldi in Como.