Karl Elsener (inventor) his grandson Carl Elsener senior (1922-2013) and his great-grandson Carl Elsener Jr. (born 1958) led the Victorinox company. Karl Elsener (inventor) Karl Elsener (9 October 1860 - 26 December 1918) was a Swiss cutler, inventor and entrepreneur. Karl Elsener completed an apprenticeship as a knife maker in Zug. After some journeyman years he opened a factory in Ibach, Switzerland in 1884 for the manufacture of knives and surgical instruments. He invented the Swiss army knife in 1891 and developed his knife manufacturing company into what has become Victorinox. From 1912 to 1918 Elsener was a member of the cantonal parliament
Karl Moritz Schumann including: Karl Moritz Schumann Karl Moritz Schumann (17 June 1851 in Görlitz – 22 March 1904 in Berlin) was a German botanist. Dr. Schumann was the curator of the Botanisches Museum in Berlin-Dahlem from 1880 until 1894. He also served as the first chairman of the "Deutsche Kakteen-Gesellschaft" (German Cactus Society) which he founded November 6, 1892. Karl Moritz Schumann participated as a collaborator in "Die Natürlichen Pflanzenfamilien" by Adolf Engler and K. A. E. Prantl and in "Flora Brasiliensis" by Carl Friedrich Philipp von Martius. The genera "Schumannianthus" (), "Schumanniophyton" (), "Schumannia" () and several species were named after