- Profession: Theologian
- Lived: September 29, 1509 or 1511- October 27, 1553 (Renaissance)
- Nationality: Spanish
- Known for: Founder of Unitarianism
- Fun Fact: Servetus was convicted of heresy "thanks to the 17 letters sent by John Calvin" whose theory of predestination Servetus had disagreed with. Many people, including Sebastian Castellio, denounced his execution and became harsh critics of Calvin's willing part in the affair.
- Fun Fact: Servetus escaped from prison following his initial imprisonment but was recaptured and burned alive. His final words were "Jesus, Son of the Eternal God, have mercy on me."
- Fun Fact:
Michael Servetus was the first European to correctly describe the function of pulmonary circulation, the portion of the human circulatory system that interacts with the lungs. He described his view of it in his work "Christianismi Restitutio" in 1553. He is best known for his contributions to the history of medicine, but he was also accomplished in astronomy, geography, meteorology, jurisprudence, translation, poetry, mathematics and the scholarly study of the Bible in its original languages. He developed a heterodox view of the Trinity and Christology during the Protestant Reformation and was executed as a heretic.