Gustav IV Adolf of Sweden
Still in his early twenties, in 1793 Du Puy traveled throughout the Holy Roman Empire, Poland and Sweden as a violinist. While in Stockholm, he was appointed to the royal chapel, and later also as an opera singer at the Royal Swedish Opera. During this period, he also had an affair with Sophie Hagman In 1799, he fell out of favor with king Gustav IV Adolf of Sweden by praising Napoleon. Du Puy was banished from Sweden, and traveled to Copenhagen.