Jan Kostka (1529–1581)

Jan Kostka
Coat of arms	Dąbrowa
Consort	Jadwiga Przerębska Zofia Odrowąż
Issue with 1555 Jadwiga Przerębska Stanisław Wojciech Kostka Jan Kostka Jadwiga Konopacka Elzbieta Róza-Zalińska Anna Tomicka with 1569 Zofia Odrowąż Jan Kostka Anna Magdalena Kostka Anna Kostka Katarzyna Sieniawska
Family	Kostka
Father	Stanisław Kostka
Mother	Elżbieta z Eilemberku
Born	ca. 1529 Sztemberk v. Stążków
Died	May 31, 1581(1581-05-31) Jarosław

Jan Kostka (ca. 1529–1581) was a Polish noble and a candidate in elections for the new King of Poland in 1572. He was also an advisor to Kings Henry of Valois and Stefan Batory.

He was a courtier and a secretary of the King, Podskarbi of Duchy of Prussia since 1555, castellan of Gdańsk in 1556–1574, voivode of Sandomierz Voivodeship since 1574, and president of the Komisja Morskia (Sea Commission). He advocated for a union of Royal Prussia with the Crown.

In 1574 and 1575, he was proposed as candidate for King of Poland (see [1]).