Jan Chryzostom Pieniążek (c. 1630–1712) was a Polish szlachcic. Starost of Oświęcim since 1666 and voivode of Sieradz Voivodeship since 1683. Marshal of the Sejm (zwyczajnego) August 17 - May 4, 1666 in Warsaw. Bibliography Marszałkowie Sejmów I Rzeczypospolitej, s. 72, Wydawnictwo Sejmowe, Warszawa 1993, 1712 deaths 17th-century Polish nobility 1630 births Clan of Odrowąż Secular senators of the Polish–Lithuanian Commonwealth 18th-century Polish nobility