Pietro Antonio Lorenzoni was an Austrian painter who is believed to have painted several portraits of Wolfgang Amadeus Mozart and his family: "The Boy Mozart", his sister Maria Anna Mozart in "Nannerl as a Child" and a portrait of their father Leopold Mozart. He arrived in Salzburg, Austria in the 1740s and first wanted to paint Wolfgang and Nannerl. His protégé, Johann Nepomuk della Croce, painted a Mozart family portrait in 1780.