Originally published on X on 10 January 2024. Vladislav/Władysław/Vladislaus/Ulászló was born in 1456, as the eldest son of Casimir IV Jagiellon, Grand Duke of Lithuania and King of Poland. His mother was Elizabeth of Austria, granddaughter of Sigismund, Holy Roman Emperor (and King of Bohemia from 1419 to 1437). Elizabeth’s brother, Ladislaus the Posthumous (Ladislav Continue reading