Career
He was part of the large Quaglio pedigree of Italian artists involved in architecture, indoor fresco decoration, and scenography (stage design) for the court theaters. He was born and died in Laino, a mountain village at Como. His most highly valued work is the painting of Saint Nicholas" Cathedral in Ljubljana.
He also painted the central hall of Meerscheinschlössl in Graz.
He had two sons, Domenico and Giovanni Maria Quaglio.