Agolgut

Agolgut is a narrative entity associated with Golgotha, whose "putrid spawn" are apparently a source of glotrot 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, 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.