Portrait of Maria Teresa Tyszkiewicz (Poniatowski), Kazimierz Wojniakowski, circa 1797
Date: circa 1797. Dimensions: height: 44.5 cm (17.5 in); width: 35.5 cm (13.9 in). Medium: pastel on paper. Collection: National Museum in Poznań. Maryja Tereza Tyškievič (Paniatoŭskaja). Марыя Тэрэза Тышкевіч (Панятоўская) (K. Wojniakowski, 1797)