Princes of the Apocalypse
Jolliver Grimjaw was the commander of the Crushing Wave Cult at Rivergard Keep. He was a shapechanger whose changed from a man to a boar in the mornings to hunt the riverbanks for wild game, and then returned to the Rivergard Keep to command the cultists stationed there.
Grimjaw was attacked by a band of adventurers who broke into his bedroom at night in an attempt to commandeer the castle from the Crushing Wave Cult. He was slain by Auron Edge with the pommel of the greatsword Bane.