Agolgut
Agolgut is a narrative entity associated with 
Golgotha, whose "putrid spawn" are apparently a source of glotrot.[1] They are venerated by 
glow-wight cultists of Agolgut and 
glow-wight shepherds of Agolgut.
Red Rock
One of Agolgut's glow-wight cultists is guaranteed to spawn in 
Red Rock as part of the quest What's Eating the Watervine? Upon finishing the quest, 
Elder Irudad comments that the glow-wights worship the Girsh Nephilim as gods,[2] which implies that Agolgut is one of the Nephilim (as well as, presumably, Bethsaida).
Opinion
agolmaggots (which are commonly found in Golgotha), 
agolflies, and 
agolzvuvs all bear the prefix "agol" in their name, which may suggest a connection with Agolgut.
