Naming the Black Riders

A Mythgard Academy lecture on The Treason of Isengard (vol. 7 of the History of Middle-earth series), in which we finally learn the True Names of all 9 black riders: 

Aloysius, Biff, Clive, Dumbo, Egbert, Fillmore, Gump, Humpty, and Irv. 

https://youtu.be/X0GljV-P0-Y?t=56m14s