When was the  sixteenth century King of Poland and Grand Duke of Lithuania died?
Sigismund II Augustus Sigismund II Augustus (Polish: "Zygmunt II August" , Ruthenian: "Żygimont II Awgust", Lithuanian: "Žygimantas II Augustas" , German: "Sigismund II. August" ) (1 August 1520 – 7 July 1572) was the King of Poland and Grand Duke of Lithuania, the only son of Sigismund I the Old, whom Sigismund II succeeded in 1548. Married three times, the last of the Jagiellons remained childless, and through the Union of Lublin introduced a free elective monarchy.
Władysław the White Władysław (Włodko) the White or Władysław of Gniewkowo (Polish: "Władysław (Włodko) Biały (Gniewkowski)" ; ca. 1327/1333 – 29 February 1388), was a Polish prince member of the House of Piast, Duke of Gniewkowo during 1347/1350–1363/1364 (his final and official resignation was in 1377) and last male representative of the Kujavian line.