Who was born earlier, Franz Viehböck or Jean-François Clervoy?
Jean-François Clervoy Jean-François André Clervoy (born 19 November 1958) is a French engineer and a CNES and ESA astronaut. He is a veteran of three NASA Space Shuttle missions.
Jan Václav Voříšek Jan Václav Hugo Voříšek (] ; "Johann Hugo Worzischek", 11 May 1791, Vamberk, Bohemia – 19 November 1825, Vienna, Austria) was a Czech composer, pianist and organist.