Fanny Cäcilie Mendelssohn, later Fanny Hensel, was a German pianist and composer, and was the sister of Felix Mendelssohn; they were both the grandchildren of the distinguished Jewish philosopher, Moses Mendelssohn. Wikipedia
November Geburt der Fanny Caecilia Mendelssohn in Hamburg als Tochter des Bankiers Abraham Mendelssohn (1776-1835) und seiner Frau Lea, geborene Salomon (1777-1842). www.rcs-krueger.de/FannyHensel.htm
The definitive Wikipedia entry for Fanny Mendelssohn. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Fanny_Mendelssohn
Even Moses Mendelssohn, thought to be an illuminate of his age, cautioned his fiance: "Modest learning becomes a lady, but not scholarship. beststudentviolins.com/nannerl.html