Excerpts from Books and Wikipedia
"Jan Hus was dean of the philosophy faculty at the University of Prague. An ardent critic of the misdeeds of the clergy, his teachings anticipated the Lutheran reformation by a century. His passionate support for church reform together with his Bohemian nationalism, brought him into conflict with the church authorities. At the Council of Constance he was found guilty of heresy and burned at the stake." [DK Timelines, p. 255]
"Jan Hus: in his thirties, priest and scholar, rector of the University of Prague, follower of John Wycliffe, now the polestar of a massive popular uprising." [Bauer: Renaissance World, p. 613-4]