Arauthator

Arauthator was a white dragon who lived under Lonefang Mountain in the Spine of the World in the Endless Ice Sea.

History
Among the dozen or so dragons that attacked the Host Tower of the Arcane in Luskan because of Sammaster's Rage. When part of the tower fell, Arauthator made off with a good deal of magical items, including a few powerful, priceless tomes.

Magazines

 * Dragon magazine 230

Sourcebooks

 * Dragons of Faerûn