A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
Author: Atarah al'Norahn
Aleria Elffin once wrote a book of humorous tales.
While waiting for Juilin Sandar to bring information on the Black Ajah in Tear, Egwene tries to read to distract herself, but even Aleria Elffin's humorous tales cannot hold her interest for more than a few pages.
(Reference: The Dragon Reborn, Chapter 49)