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Dates: 1390 - 1460 (Dates are approximate. ) 

Petr Chelčický (Czech pronunciation: [ˈpɛtr̩ ˈxɛltʃɪtskiː]) (c. 1390 – c. 1460) was a Christian political leader and author in fifteenth-century Bohemia (now the Czech Republic). Chelčický is considered the foremost thinker of the fifteenth-century Czech Hussite Reformation movement.