Servetus,
Michael (Sp. name Miguel Serveto) 1511-53; Sp. theologian: burned at the stake for heresy
See Servetus in American Heritage Dictionary 4
(sər-vēˈtəs), Michael Originally Miguel Serveto. 1511-1553.
Spanish-born theologian and physician who described the circulation of blood. His denial of the doctrine of the Trinity led to his execution for heresy.