From Rocklopedia Fakebandica
Gyori Misklova, who was hanged in 1527. It gives him serious anger management issues after his much more interestingly named roommate Vromik wins a violin competition instead of him. So Freddie (no last name given) kills Vromik and dies fleeing the crime.
From the "Curse of the Condemned Gypsy" story in comic book Baffling Mysteries #22 (September 1954).