Emanuel Steward was an American boxer, trainer, and commentator for HBO Boxing. Steward trained 41 world champion fighters throughout his career, most notably Lennox Lewis, Wladimir Klitschko, Thomas Hearns, and Tony Tucker, through the famous Kronk Gym. Wikipedia*
On the C-SPAN Networks:
Emanuel Steward has one video in the C-SPAN Video Library; the first appearance was a 2002 Senate Committee.