Charles IV (Karel IV.) 1316 – 1378, born Václav (Wenceslaus), the second King of Bohemia from the House of Luxembourg, and the first King of Bohemia to also become Holy Roman Emperor. probably ther most famous personality of the Czech state ever. He rebuilt the city of Prague as the capital of Central Europe and one of intellectual and cultural centers of Europe. In 1348, he founded the Charles University in Prague, which was named after him and was the first university in Central Europe.