Sir Godfrey Savill??

The gnoll fang you encountered within the graveyard in Siris. After he resurrected the dragon and disappeared from the ritual, you found him once again---impersonating Lord Godfrey Savill at Steepkeep Keep. After Thorns killed the decoy he placed in the throne room, a fight broke out. During it, he summoned a dragon ally, DogHog the Great, but died from multiple wounds inflicted by Fen after Theo catapulted their knife into him.