I was reading a mythology book today and i found out that Helen (Helena) of Troy was and the sister of Castor and Pollux, the twins from wich the Gemini myth comes from. This means she was also part bird (Castor and Pollux were also born from an egg hatched by Leda), and considering how pretty she was (“the face that launched a thousend ships” “the most beautifull woman on earth”), she is definitely related to the myth, in some way. She was also a trouble maker, so yeah, that fits Gemini too. The connsensus is that Helena, the name, means “the bright one”.
Helena Bonham Carter (Sun in Gemini) photographed by Tim Walker for Vogue UK (2012)