Olga's Gallery
Dmitry Levitzky.
Portrait of Johann Hauff.
1790s. Oil on canvas. The Russian Museum, St. Petersburg, Russia. More. 
Hauff, Ivan Ivanovich (Johann) (? - 1810) - painter and restorer in the Imperial Hermitage between 1790 and 1800. In 1801, he became a teacher and restorer in the Academy of Arts