Gelkis and Magram clans rep

If you already completed Death to Agogridon, you can talk to Karnum Marshweaver at the Cenarion Wildlands (Cenarion Circle) in Desolace to receive the reputation boost!

https://www.icy-veins.com/forums/topic/38432-how-to-reach-exalted-with-gelkis-and-magram-clans-in-patch-801/