Baron Kildear was a human noble who was allied with Soulblighter. In the days leading up to the war, he had his brigand henchmen raid cemeteries for corpses to convert into Thrall and silencing any who got in the way.
His foul deeds were soon ended when the Legion arrived at Willow Creek and saved the few villagers that hadn't been killed by the undead Ghasts. When several villagers were rescued from a cemetery from his brigands and promtly revealed his handiwork, his keep was laid to siege by the Legion.
He had attempted to escape via secret exits inside his keep but was ultimately hunted down and executed for his crimes.