Marek Sobieski was a Polish nobleman, starosta of Krasnystaw and Jaworów, and the older brother of King John III Sobieski of Poland. He graduated from Nowodworek College in Kraków and Kraków Academy, then traveled and studied in Western Europe. After returning to Poland in 1648 he fought against the Cossacks and Tatars at the Siege of Zbaraż and at the Battle of Beresteczko. He was taken captive by Tatars in 1652 and then killed by Cossacks.

John III Sobieski was King of Poland and Grand Duke of Lithuania from 1674 until his death in 1696.