From Tar Valon Library
Author: Atarah al'Norahn
Teadra was a name that Birgitte Silverbow was known by in one of her past lives.
During the War of Power, Moghedien remembers Teadra foiling a plan of hers to "lay Lews Therin by his heels". Teadra did not know who Moghedien was, but Moghedien recognized her. Teadra died before Moghedien could deal with her.
(Reference: The Fires of Heaven, Chapter 25)