Sophie Gräfin von Hatzfeldt, born Gräfin von Hatzfeldt-Schönstein zu Trachenberg, was born on 10 August 1805 in Trachenberg (Lower Silesia) and died on 25 January 1881 in Wiesbaden.
She was active in the German working-class movement and partner and confidante of Ferdinand Lassalle.