Gramps, from A Pilgrimage, lives in a Small Hut (#1) on an island in the Swamp. When you enter you’ll find body parts on the table. Apparently it’s his dinner!
You can decide to let Gramps live for some information or kill him for extra experience. If you decide to let him live he’ll give you Azoth(a potion base) and the Formula for Hanged Man’s Venom.