Board Thread:Wiki-Related Discussion/@comment-25375217-20150325163457/@comment-25375217-20150326013229

Emma being the Black Swan (when evil) has been stated multiple times by the writers, and the Black Swan is from Swan Lake. So the main character of the show is confirmed by the writers to be based off of a character from Swan Lake. I'm not inferring it, it's been stated. I can find a source if needed.

Ugly Duckling... I never made that connection, I vaguely see it now, but I don't think that's worth a page because it's not really a direct connection. Swan Lake is.