premise: Matthias Corvinus, King of Hungary, began his library in 1495.
hypothesis: The Bohemian War ( 1468 -- 78 ) began when the Kingdom of Bohemia was invaded by the king of Hungary , Matthias Corvinus . Matthias Corvinus , also called Matthias I ( Hunyadi Mátyás , Matija Korvin , Matia Corvin , Matej Korvín , Matyáš Korvín 23 February 1443 -- 6 April 1490 ) , was King of Hungary and Croatia from 1458 to 1490 .