Elizabeth Lucretia of Cieszyn, was a reigning Duchess of Cieszyn from 1625 until her death. Born as the third child and second daughter of Adam Wenceslaus, Duke of Cieszyn, she was the last ruler of Cieszyn from the Polish-origin Silesian Piast dynasty.

Frederick William of Cieszyn was a Duke of Cieszyn (Teschen) since 1617 until his death; he was the last male scion of the Cieszyn branch of Silesian Piasts.