Pierce Shackleton

Pierce Shackleton is a Forsaken mage trainer located in the Magic Quarter in the Undercity.

During the Burning Legion's third invasion of Azeroth, he joined the Tirisgarde and is located in the Hall of the Guardian.

Quests

 * Magecraft

Quotes
Well met,. My advice to you is this: As you travel the world, be wary of magic for it will burn the untrained.
 * Non-mage gossip

Relatives
He is very likely somehow related to Samantha Shackleton.