Michael Servetus (in 1553, he was put to death on the order of John Calvin, for disputing the dogma of the Trinity)
Jacques de Molay (the last Grand Master of the Knights Templar was tortured into a confession, then slowly burned to death on a scaffold in 1314)
Geoffroi de Charney (like de Molay, he was arrested on the order of Pope Clement V, tortured into a confession, then burned to death as a relapsed heretic in 1314)
Guillaume Bélibaste (the last Cathar parfait in Languedoc was burned at the stake in 1321, as a result of an Inquisition headed by Jacques Fournier, later Pope Benedict XII)
Jan Hus (in 1415, for heresies against the Roman Catholic church, he was stripped naked, placed in straw up to his neck, and burned alive)
Thomas Cranmer (in 1556, the former Archbishop of Canterbury and reformer of the Church of England was burned alive as a heretic by order of "Bloody Mary")
William Tyndale (in 1536, the translator of the Bible into English was strangled to death, then burned at the stake as a heretic)
Giordano Bruno (in 1548, on the order of Pope Clement VIII, the scientific-minded Dominican monk was burned at the stake for claiming that the sun is one of many stars)
Joan of Arc (in 1431, the Maid of Orleans and France's most famous saint was burned alive for the "heresy" of wearing men's clothes in an attempt to avoid rape)