Anders Adolf Retzius (Fig. 1) was born on October 13, 1796 in Lund as the son of Anders Jahan Retzius (1742–1821) and Ulrika Beata Prytz (1764–1808), and the younger brother of obstetrician Kristian Retzius (1795–1871); he later became the father of neuroanatomist Gustaf Retzius (1842–1919) [2, 4].