The Neureni Horde
From Mistipedia
The Neureni Horde invaded Prime Material Barovia from the east through the Svalich Pass in roughly 230 BC. The horde advanced as far as Vallaki where General-Princess Nicoleta von Zarovich routed it after a three-month siege. It held Barovian land for a total of seven months.
The word neuri lingers on in Balok to this day and signifies either werewolf or shapechanging wizard. The horsemen who settle in Gundarak were possibly kin to the barbarian of the Neureni Horde. The death god of Gundarakite, Erlin, is very likely one with the demon lord of the Neureni, Irlek-Khan.
See: Blood of Mazonn
References
Gazetteer I, p 16.
