Josef Grassi (22 April 1757 – 7 January 1838) was an Austrian portrait and history painter.
He felt that he was being unfairly treated there so, when he lost a competition for a travel scholarship to Heinrich Friedrich Füger, he took the advice of some friends who were Polish nationalists and moved to Warsaw.
[2] There, he became a teacher of Teresa Jabłonowska (a descendant of Stanisław Jan Jabłonowski) and established himself as a successful portrait painter.
He took two leaves of absence while there; one to Gotha in 1804, where he decorated a bedroom for Duke Augustus and, from 1808 to 1810 to Rome as a member of the Accademia di San Luca.
He received the Knight Grand Cross of the Civil Order of Saxony from King Frederick Augustus.