Wenceslaus I, Duke of Cieszyn Duke of Teschen (1413–1474) Parents Bolesław I, Duke of Cieszyn Euphemia of Masovia Children Siblings Bolesław II, Duke of Cieszyn Władysław of Głogów Przemysław II, Duke of Cieszyn Alexandra of Teschen Partners Elisabeth of Brandenburg, Duchess of Brzeg-Legnica and Cieszyn