Friedrich Wilhelm Putzger (10 January 1849, Siebenlehn - 3 August 1913, Plauen) was a German teacher and cartographer.
Otto Rühle (23 October 1874 in Großschirma – 24 June 1943 in Mexico) was a German Marxist active in opposition to both the First and Second World Wars, and a founder along with Karl Liebknecht, Rosa Luxemburg, Franz Mehring and others of the group and magazine Internationale, which posed a revolutionary internationalism against a world of warring states, and also the Spartacist League (Spartakusbund in German) in 1916.