Fred Saberhagen

Fred Thomas Saberhagen (May 18, 1930 – June 29, 2007) was an American science fiction and fantasy author most famous for his Berserker series of science fiction short stories and novels.
Saberhagen also wrote a series of vampire novels in which the famous Dracula is the main protagonist, and a series of post-apocalyptic mytho-magical novels beginning with his popular Empire of the East series and continuing through a long series of Swords and Lost Swords novels. Saberhagen died of cancer, in Albuquerque, New Mexico.