Prince Jerzy Sebastian Lubomirski (20 January 1616 – 31 December 1667) was a Polish noble (szlachcic), magnate, politician and military commander, and Prince of the Holy Roman Empire. He was the initiator of the Lubomirski Rebellion of 1665–1666 against royal authority.
Lubomirski was the son of voivode and starost Stanisław Lubomirski and Princess Zofia Ostrogska. He was married to Konstancja Ligęza since 1641 and Barbara Tarło since 1654. He was starost of Kraków since 1647, Crown Court Marshal in the same year, Crown Grand Marshal since 1650, Crown Field Hetman since 1658, starosta of Nowy Sącz and Spisz.
He became Sejm Marshal of the ordinary Sejm between 1 February and 29 March 1643 in Warsaw.
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Biography
Lubomirski became famous as a commander during wars with the Zaporozhian Cossacks, Sweden, Transylvania and Muscovy in the 1648–1660 period. Inter alia he crushed the invading troops of George II Rákóczi and raided Transylvania. He also forced, together with Stanisław "Rewera" Potocki, Russian troops to surrender at the battle of Cudnów in 1660.
He was a staunch defender of the "Golden freedoms" and the leader of the fierce opposition to King John II Casimir, who was attempting to increase his power.
The King accused him of treason to the state and with an adjudication of guilt adopted by the Sejm, he lost all his offices and was sent into banishment in 1664.