Rainesfere

Rainesfere is a bannorn in the Arling of Redcliffe, a tiny province squeezed between the Frostback Mountains and Lake Calenhad.

Teagan Guerrin is the Bann of this bannorn.

Background
Rainesfere was occupied during the Second Orlesian Occupation.

Dragon Age: Origins

 * Codex entry: A Rolled-Up Note
 * Codex entry: Thorval's Luck
 * Codex entry: Bann Teagan Guerrin

Dragon Age: Inquisition
If the Inquisitor chose to side with the mages with the quest In Hushed Whispers, then Teagan Guerrin later asks for reparations because a freehold in Rainesfere was burned to the ground when a mage inside lost control of his abilities.

Trivia

 * The Rolled-Up Note entry can be found in the quest codex entries, and seems to send the Warden to the bannorn, but it was never meant to be a quest as confirmed by Bioware