Opened at the Casino Theatre on October 14, 1901. Ran 144 performances, to about February 1902. The Little Duchess is a musical in three acts with music by Reginald De Koven and both book and lyrics by Harry B. Smith. Produced by Florenz Ziegfeld Jr., the work was an adaptation of Alfred Hennequin's 1878 play Niniche. The musical was created as a starring vehicle for Ziegfeld's longtime life partner, the actress Anna Held, who portrayed Clare de Brion, a.k.a. "The Little Duchess". Wiki link