Jan Hus (/hʊs/; Czech: [ˈjan ˈɦus]; c. 1370 – 6 July 1415), sometimes anglicized as John Hus or John Huss, and referred to in historical texts as Iohannes Hus or Johannes Huss, was a Czech theologian and philosopher who became a Church reformer and the inspiration of Hussitism, a key predecessor to Protestantism, and a seminal figure in the Bohemian Reformation. Hus is considered by some to be the first Church reformer, even though some designate this honour to the theorist John Wycliffe. His teachings had a strong influence, most immediately in the approval of a reformed Bohemian religious denomination and, over a century later, on Martin Luther. Hus was a master, dean and rector at the Charles University in Prague 1409–1410.