Sophie Magdalene of Legnica-Brzeg Polish duchess (1624–1660) Parents Dorothea Sibylle of Brandenburg John Christian of Brieg Children Siblings August of Legnica Christian, Duke of Brieg George III of Brieg Sibylle Margarethe von Brieg Louis IV of Legnica August of Brieg Zygmunt Piastowicz Partners Charles Frederick I of Münsterberg-Oels