The 1925, 1930, and 1956 films are all based on a Hungarian play entitled A Hattyú, Vígjáték Három Felvonásban (The Swan, A Comedy in Three Acts) [REF] by Ferenc Molnár (Budapest, 1914).
The film was shot on location in North Carolina, at the 1895 Biltmore Estate of George W. Vanderbilt in Asheville and at Lake Junaluska.