Jan Kostka (1529–1581)

Jan Kostka
Noble Family	Kostka
Coat of Arms	Dąbrowa
Parents	Stanisław Kostka Elżbieta z Eilemberku
Consorts	Jadwiga Przerębska Zofia Odrowąż
Children	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 Ostrogska Katarzyna Sieniawska
Date of Birth	ca. 1529
Place of Birth	Sztemberk v. Stążków
Date of Death	May 31, 1581
Place of Death	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 Voivodship 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]).