Michael Servetus (/sərˈviːtəs/; Spanish: Miguel Serveto as real name; French: Michel Servet; also known as Miguel Servet, Miguel de Villanueva, Revés, or Michel de Villeneuve; 29 September 1509 or 1511 – 27 October 1553) was a Spanish theologian, physician, cartographer, and Renaissance humanist. He was the first European to correctly describe the function of pulmonary circulation, as discussed in Christianismi Restitutio (1553). He was a polymath versed in many sciences: mathematics, astronomy and meteorology, geography, human anatomy, medicine and pharmacology, as well as jurisprudence, translation, poetry, and the scholarly study of the Bible in its original languages.