Szymon Marcin Kossakowski (; 1741 in Šilai, Jonava – 1794) was a Polish–Lithuanian nobleman (szlachcic), and one of the leaders of the Targowica Confederation. In 1793, he became the last Grand Hetman of Lithuania. Biography He participated in the Radom Confederation and the Bar Confederation. A supporter of the Russian Empire during the Kościuszko Uprising and earlier, he was deemed a traitor. In the aftermath of the Vilnius Uprising he tried to escape by boat, but was captured and hanged in the town hall square of Vilnius with the inscription of He who swings will not drown and was buried in the cellars of the church in Jonava. References 1741 births 1794 deaths People from Jonava District Municipality People from Trakai Voivodeship Szymon Field Hetmans of the Grand Duchy of Lithuania Great Hetmans of the Grand Duchy of Lithuania Polish generals in other armies Bar confederates Targowica confederates People executed for treason against Poland Russian people of the Polish–Russian War of 1792 Recipients of the Order of the White Eagle (Poland) People executed by the Polish–Lithuanian Commonwealth Executed Polish people Executed Lithuanian people People executed by Poland by hanging 19th-century executions