High Quality Content by WIKIPEDIA articles! The Constitution of May 3, 1791 (Polish: Konstytucja 3 Maja 1791 roku) is an 1891 Romantic oil painting on canvas by the Polish artist Jan Matejko. It is a large piece, and one of Matejko`s best known. It memorializes the Polish Constitution of May 3, 1791, a milestone in the history of the Polish-Lithuanian Commonwealth and the high point of the Polish Enlightenment.