Klemens von Metternich
Klemens Wenzel Nepomuk Lothar, Prince von Metternich-Winneburg zu Beilstein, KOGF (; 15 May 1773 – 11 June 1859) was an Austrian diplomat who was at the center of European affairs for four decades as the Austrian Empire's foreign minister from 1809 and Chancellor from 1821 until the liberal Revolutions of 1848 forced his resignation.
Zygmunt Klemensiewicz
Zygmunt Aleksander Klemensiewicz (24 April 1886 – 25 March 1963) was a Polish physicist and physical chemist.
Early in his career (working for Fritz Haber in Karlsruhe), he made a pioneering contribution to the development of the glass electrode.