From Tar Valon Library
Author: Atarah al'Norahn
Joana was a name that Birgitte Silverbow was known by in one of her past lives. Birgitte tells Elayne that she does not know if she can live up to being "Birgitte", a woman of legend, in the real world; in all of her other lives, she just did what she had to do, and it was enough for Joanna, or Maerion, or any other woman.
(Reference: Lord of Chaos, Chapter 40).