Curpile Fyod is a guard who watches over the hollow tree, the entrance to the Myreque's first hideout. He is found in The Hollows in Mort Myre Swamp, wielding a steel sword and what seems to be a bronze roundshield.
Although the player can speak with him during the In Search of the Myreque quest, afterwards he tells the player to leave him alone so he can concentrate on being a guard.
Following the events of In Aid of the Myreque, the Myreque moved their base from Mort Myre to Burgh de Rott. At the end of the quest, he is still present at his post, however.