A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
Author: Atarah al'Norahn
Paral was one of the great cities of the Age of Legends, before the Breaking of the World. According to what information we have, it was the ninth largest/most important city of the Age of Legends. No other information is available.
(Reference: The World of Robert Jordan's "The Wheel of Time")