Prince of Poland, born in the royal palace at Cracow, 3 October,
1458; died at the court of Grodno, 4 March, 1484. He was the grandson of
Wladislaus II Jagiello, King of Poland, who introduced Christianity
into Lithuania, and the second son of King Casimir IV and Queen
Elizabeth, an Austrian princess, the daughter of Albert II, Emperor of
Germany and King of Bohemia and Hungary. Casimir’s uncle, Wladislaus
III, King of Poland and Hungary, perished at Varna in 1444, defending
Christianity against the Turks. Casimir’s elder brother, Wladislaus,
became King of Bohemia in 1471, and King of Hungary in 1490. Of his four
younger brothers, John I, Albert, Alexander, and Sigismund in turn
occupied the Polish throne, while Frederick, the youngest, became
Archbishop of Gnesen, Bishop of Cracow, and finally cardinal, in 1493.