Jan Kazimierz Sapieha the Younger

Jan Kazimierz Sapieha the Younger (Lithuanian: Jonas Kazimieras Sapiega jaunesnysis) (1637–1720) was a Grand Hetman of Lithuania commencing in 1682. He held the title of a Duke starting in 1700. In 1681 he became Field Hetman of Lithuania, the following year he also became the voivode of Vilnius.

Kazimierz Jan Paweł Sapieha.PNG

He commanded the Lithuanian Army contingent of the Polish-Lithuanian Commonwealth during the campaign to lift the Siege of Vienna by the Ottoman Turks. When the main Polish Army under the King of Poland John III Sobieski, who was nominated the Supreme Commander of the Holy League, marched on Vienna and played a decisive role in the battle, it left Poland undefended. As a result, the Lithuanian troops were drawn into a fight along the Polish border tying down the anti-Habsburg Hungarian Kuruc forces under the vassal king of Upper Hungary, Imre Thököly, along the border between Upper Hungary and Poland.

This punitive action on the edge of the overall campaign was successful in keeping these irregular Hungarian troops (bolstered with Ottoman levies) from either raiding into Poland or coming to the assistance of the besieging Ottoman Army when the Holy League attacked their positions outside Vienna on 12 September 1683. He was meant to break off his attack along the Hungarian border and participate in the Battle but by the time he arrived in Vienna at the head of the Lithuanian Army this famous Battle was concluded.

He is the founder of Sapieha Palace in Vilnius, designed by Pietro Perti from Italy.

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