Of Ironforge is a title awarded to Alliance players upon completing the achievement 
Exalted Champion of Ironforge, which requires the player attain exalted status with Ironforge and earn the right to represent Ironforge in the Argent Tournament.
Dwarf characters can obtain this title by completing 
[80] The Valiant's Challenge (Alliance). Characters of other Alliance races must complete their version of The Valiant's Challenge, then complete [80] A Valiant of Ironforge.
Patch Changes
Patch 3.1.0 (2009-04-14): Title added.
