The Seven Swans

The Seven Swans is a lost 1917 silent film fantasy starring Marguerite Clark. Famous Players Film Company produced and J. Searle Dawley directed.
Plot.
Based on a story by Hans Christian Andersen, Clark stars as Princess Tweedledee who later falls in love with Prince Charming. An evil witch, yearning to take over a kingdom, turns the Princess's brothers into swans. Moon Fairies vow to turn her brothers back to humans if she knits them seven robes and not speak to another human for a specified amount of time.