Lodewijk Johan Sigismund van Kempen 1838–1910 Source: Wikimedia Commons About Lodewijk Johan Sigismund van Kempen politician (1838–1910) People from the Same Era Karl Lorenz Rettich 1841–1904 painter Dassow Charles Alfred Pillsbury 1842–1899 politician Warner Ambroise Tardieu 1840–1912 archaeologist, genealogist Clermont-Ferrand Francis M. Kingman b. 1837 politician Alfred François Mouillard 1831–1906 painter Paris George Edward Post 1838–1909 botanical collector, botanist, explorer, physician, scientific collector, surgeon, university teacher New York City