1000972 Friedrich Engels and Karl Marx, with Jenny, Eleanor and Laura Marx, 1864 (hand-coloured photo) by German Photographer, (19th century); Private Collection; (add.info.: Friedrich Engels (28 November 1820 ??5 August 1895) was a German social scientist, author, political theorist, philosopher, and father of Marxist theory, alongside Karl Marx. Karl Heinrich Marx (5 May 1818 ??14 March 1883) was a German philosopher, economist, sociologist, historian, journalist, and revolutionary socialist. Jenny was the eldest of Marx\'s three daughters, then Laura and the youngest was Eleanor. Friedrich Engels (1820-95) German Socialist philosopher and collaborator of Marx in the foundation of modern Communism; Karl Marx (1818-83) German philosopher, revolutionary, sociologist, historian, and economist; Marx is featured here with his daughters Jenny, Eleanor and Laura;); 穢 Giancarlo Costa; German, out of copyright.