When was the  sixteenth century King of Poland and Grand Duke of Lithuania died?
VI High School – King Sigismund Augustus VI High School – King Sigismund Augustus is a secondary school in the Bojary district of the city of Białystok in Poland. The school was founded in 1915 and its alumni include the inventor of Esperanto . The school is named after the sixteenth century King Sigismund II Augustus.
Michał Kazimierz Radziwiłł Prince Michał Kazimierz Radziwiłł (Lithuanian: "Mykolas Kazimieras Radvila" ) (26 October 1625 – 14 November 1680) was a Polish–Lithuanian noble and magnate. He is sometimes referred to as "the first" Michał Kazimierz Radziwiłł, to distinguish him from the other member of his family to use the name.