He made a fragmentary translation of the Prophecies of the Dragon into what was then called the vulgar tongue.
(Reference: A Crown of Swords, Footer)
"Master of the lightnings, rider on the storm, wearer of a crown of swords, spinner-out of fate. Who thinks he turns the Wheel of Time, may learn the truth too late." (Part of Mangore's translation; A Crown of Swords, Footer)