Paedan

Paedan is a bounty hunter working for Arl Howe with Shaevra.

Involvement
Paedan set a trap for Grey Warden supporters by setting up a poster in the market calling for a "meeting of friends" at the Pearl brothel. When the Warden arrived following up on the poster, he was delighted that his trap snared an actual Warden, and they attacked. If the Warden already had killed Arl Howe, he won't dare attack.

It seems Paedan made enemies of his own; the Antivan Crows have a contract on him....which the Warden can collect during The Trial of Crows.