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Charles IV Holy Roman Emperor reconstruction 1316 - 1378

Charles IV is the son of John I of Bohemia and the first Czech/Bohemian king to become HRE. Under the rule of Charles the Czech state became it's most powerful and that's why he is known as the father of Czechia. Charles had many children but the two most important was Wenceslaus IV of Bohemia and Sigismund Holy Roman Emperor.