His works cover both Baroque and Rococo, the latter prevailing in his paintings rather than in his frescoes. His greatest patron was Karl Joseph von Firmian, the Imperial Governor of Lombardy under Maria Theresa who commissioned him to paint the Palazzo Firmian-Vigoni. From 1793, he taught at the Brera Academy of Fine Arts in Milan where he died on 24 July 1804, aged 78, in Milan.[3] Among his pupils was Giuseppe Mazzola.
Karl Weiß, Knoller, Martin. In: Allgemeine Deutsche Biographie (ADB). Vol 16, Duncker & Humblot, Leipzig 1882, p. 321–323. (in German)
Hanns-Paul Ties, Paul Troger, seine Schüler, seine Zeit. Neufunde und Neuzuschreibungen zur Tiroler Barockmalerei, in: Der Schlern, Zeitschrift für Südtiroler Landeskunde, 86, No. 7/8 2012, p. 143 et seq. (in German)