Let this link be a starter. I've never heard about her untill today. And if i look in music history i can only find St. Hildegarde mentioned as a composer, speaking of literature and other art etc. you can barely find any. Why is it that history don't speak much of women? Even nowadays some ppl make boundries between women and man. I've experienced it lately. Have you?

http://en.wikipedia.org/wiki/Hypatia