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).
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