What was the king whose mistress was Elżbieta Branicka criticized of as the last king of the Commonwealth?
Elżbieta Branicka: Elżbieta Branicka (c.1734-1800) was a Polish noble lady, political plotter, mistress of King Stanisław August Poniatowski. Stanisław August Poniatowski: Stanisław II Augustus (also Stanisław August Poniatowski; born Stanisław Antoni Poniatowski; 17 January 1732 – 12 February 1798) was the last King of Poland, Grand Duke of Lithuania and the last monarch of the united Polish–Lithuanian Commonwealth (1764–95).
i don't know