Blacklake District, and Neverdeath Graveyard .. He gives several quests in these areas. these quests are usually handed by letters sent to the player as an anonymous sender (A friend).
In Blacklake he is found right after crossing the bridge on the way to hazel the alchemist, to the right in the bushes.
in Neverdeath he is found at the passage after Pauper's field, to the left.