Lenore, the Bride of Death

Lenore is a serial killer, black widow, and darklord literally wed to Death (as in the actual Grim Reaper, not Lowellyn Dachine). Lenore is an immortal warlock, granted supernatural powers from her husband. Lenore lives in a looming manor, where she frequently hosts dinner parties. Many of her guests lost their lives, and Lenore subsequently offers them as sacrifices to her husband.