Bund der Gerechten
Johann Georg Eccarius (also known as John George Eccarius; 23 August 1818–5 March 1889) was a Thuringian tailor and labour activist. Eccarius was a member of the League of the Just and later of the Communist League before becoming General Secretary of the International Workingmen's Association (IWA), commonly known as the First International, in 1867.