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.
Nicholas II of Niemodlin Nicholas II of Niemodlin (Polish: Mikołaj II Niemodliński ;  1462 – 27 June 1497), was a Duke of Opole-Brzeg-Strzelce-Niemodlin in 1476 (as co-ruler of his father) and sole Duke of Niemodlin from 1476 until his death.