Friedrich Wilhelm German Mäurer (11 February 1811, Bensberg – 7 July 1883, Paris) was a German Communist writer and leader of the early German labor movement.[1] [2] He joined the League of Outlaws ("Bund der Geächteten) because of his democratic beliefs. When the League of Outlaws became the League of the Just ("Bund der Gerechtigkeit"), Mäurer became a member of the League of the Just. He wrote poetry for its newsletters and several books,[3] and with Moses Hess was an important link between it and Karl Marx.[4]