Elżbieta of Bytom-Koźle Duchess of Cieszyn (d. 1374) Parents Margareta of Sternberg Bolesław of Bytom Children Anna of Cieszyn Bolesław I, Duke of Cieszyn Przemysław of Oświęcim Margaret of Cieszyn Siblings Bolka of Bytom Euphemia of Bytom Partners Przemyslaus I Noszak, Duke of Cieszyn