In his Volksmärchen der Deutschen (Fairytales of the Germans) Johann Karl August Musäus tells the story of Crocus, a squire in the service of Duke Czech. Crocus fell in love with a nymph in the forests of Bohemia and saved the tree where she lived from destruction by the duke¿s troops. Crocus had three daughters by the nymph, the youngest of whom, called Libussa, founded the city of Prague. Two German-speaking authors based works on these legendary events from early Czech history: Clemens Brentano, in Die Gründung Prags (The Foundation of Prague), and Franz Grillparzer, in Libussa. Later, the Czech composer Bed¿ich Smetana wrote an opera on the subject.