There are few NPCs in World of Warcraft that directly or indirectly refer to Ashbringer or its creator, assumingly to be Archmage Timolain.

Bardu Sharpeye
The Bulwark, Tirisfal Glades

Hello. I’ve set up camp here at the Bulwark to make my preparations for my journey into the Plaguelands. I’ve heard rumor that a great human wizard took up residency in Hearthglen not terribly long ago. He was commissioned by the Scarlet Crusade to fashion their warriors and hunters new bows and guns. It’s said that he completed a remarkable weapon before the Crusade killed him.

I guess their mistrust of the arcane has grown.

Caretaker AlenLight’s Hope, Eastern Plaguelands. The what-bringer? Oh, ASHbringer? Never heard of it … What? Stop bothering me!I come from the land down under … where women plague and men sunder.

Shen’dralar Zealot
Dire Maul Library

The Master holds great interest in the Lair of Nefarian. If only someone would defeat the dragon and his minions and retell the tale to the Prince. I bet that would loosen the Prince’s lips. The Ashbringer could be found!

Shen’dralar Zealot
Dire Maul Library

Has the Prince recanted the tale of the Ashbringer? It is our most favorite of his stories. His favorite is the follow up to the Ashbringer. Of course, nobody has ever been able to get that story out of him.

Alexia Ironknife
Chillwind Camp, Western Plaguelands

Greetings. Don’t have too much time to talk—I’m just using Chillwind as a camp to get some rest before heading to Hearthglen. I’ve heard word that before they went crazy, the Scarlet Crusade had a mage working for them who was trying to create powerful bows and guns for their soldiers. I’m not sure if he succeeded or not … the Crusade killed him before any of his finished product made it out. Maybe they killed him to keep it a secret … or maybe they distrust the arcane that much.

Narain Soothfancy
Steamwheedle Port, Tanaris

Don’t tell me! Shhh! You are here about the Ashbringer?!? Yes … Yes … No! My bad.

What can I help you with, (race)?

BOOKS

Nat Pagle’s Guide to Extreme Angling

… and so that’s where you’ll find the legendary sword of the Scarlet Highlord, Ashbringer.

Ain’t it amazing, what you run into in an ordinary day of fishin’?

For the Origin of the Ashbringer, visit the Burning Crusade Story Arcs section where you may find a transcript of what Mograine tells his friends in South Shore within Caverns of Time: Old Hillsbrad. Go here

Update

The Burning Crusade expansion introduced the Caverns of Time: Old Hillsbrad where an expanded lore of the origin of the Ashbringer is revealed. Watch the dialogue video.