Killed him earlier today with...
65th cleric
65th warrior
62nd rogue
59th rogue
56th druid
51st druid (me)
Bolgin Codslayer has a 12hr spawn timer who is the NPC you turn in the "Froglok Essence" which is looted from Ulump in Swamp of No Hope.
After handing Bolgin the Froglok E
Gilriss the Handler will only accept two Tuskers at a time. Go back to the beach area and capture the third Tusker. You'll be able to speak to Gilri ...
