Through experiments with garden peas, Moravian botanist Gregor Johann Mendel determined the laws of heredity, later the foundation for the science of genetics. The Order of Saint Augustine gave this ethnic German his first name when he joined the friars. https://en.wikipedia.org/wiki/Gregor\_... Photo credit: Wellcome Library, London., Portrait of Mendel in oval., Life of Mendel, Iltis, Hugo. Published: Allen and Unwin 1932. Facing page 264, plate X.