The Lair is to be found at 35k 35k in Caledor.
He drops blue chest peices.
Note: There is a typo in the Tome of Knowledge, his real name is Festitt, and not Fesitt.
From the High Elf Warcamp Conqueror's Descent head down the path to the RVR zone and at 31k 35k, stop. You can see the cave from the path. Hop the rocks and you are there.
From the Shrine of the Conqueror head up the path towards the High Elf Warcamp and at 31k 35k, stop. You can see the cave from the path. Hop the rocks and you are there.
Fesitt hides out in the small cave within the cave.