Sarah Whitworth presents a discographic essay on the Comtessa de Beatriz de Dia (attested in 1212), with the texts of her songs "A Chanter m'er" and "Estai ai" in English translations by Meg Brogan.
From Sarah Whitworth's multi award-winning site, Early Music by Women Composers, here is a tidbit on Queen Blanche of Castile with the English translation of a portion of one of her songs to the Virgin Mary.
UPDATED LINK: Brian Tompsett of Hull has gathered together an Internet collection
on royal genealogy: the Directory of Royal Genealogical Data allows searching by Royal Family Alphabetical Listings by Surname or by Royal Family Alphabetical Searching by Forename. In addition, the user can search the "Catalog of Royal Family Lineages," arranged geographically, including The Roman and Byzantine Worlds, The Barbarian West, Europe, and Islamic Dynasties.
UPDATED LINKS:Several Glossary entries in
The ECOLE Initiative: Creating a Hypertext
Encyclopedia of Early Church History on the World-Wide Web are skeleton biographies of
royal and noble female religious figures, including:
Eleanor
of Aquitaine: 
NEW LINK! For an intriguing article about a strong-minded
noble mother and her equally strong-minded noble daughter, see
"Marie de Champagne and Eleanor of Aquitaine: A Relationship Reexamined" By June Hall Martin McCash (Reprinted from the October 1979 issue of Spéculum -
A Journal Of Medieval Studies (LIV, no. 4).
UPDATED LINK: For Eleanor of Aquitaine's genealogy, see Eleanor of Aquitaine, Duchess of Aquitaine from Brian Tompsett.
Here is another tidbit from Sarah Whitworth's Early Music by Women Composers site, this time on Eleanor of Acquitaine (fl. late 1100's, patroness).
From the pen of Garsenda, Countess of Provence (fl. 1191-1215), here is a debate song (at Early Music by Women Composers).
Marie de
Champagne: 
NEW LINK! For an intriguing article about a strong-minded
noble mother and her equally strong-minded noble daughter, see
"Marie de Champagne and Eleanor of Aquitaine: A Relationship Reexamined" By June Hall Martin McCash (Reprinted from the October 1979 issue of Spéculum -
A Journal Of Medieval Studies (LIV, no. 4).
Here we have a series of five Letters of Marie de Champagne to her cousin Elisabeth de Vermandois in modern French translation.
Here is a tidbit on Marie de Champagne (fl. late 1100's, patroness) from Early Music by Women Composers.