Question: Gidget Gein got his stage name from a serial killer that died in what year?

Context paragraphs:
Sun Hill Serial Killer: The Sun Hill Serial Killer was a major storyline from ITV's cop show "The Bill".  Known originally as the "River Murders", the storyline spanned several months in 2002 and served as the exit for popular cast regular Cass Rickman (played by Suzanne Maddock).  It was the first of several serial killer storylines from the show.  Events came to a head in the New Year of 2003, when Acting DI Samantha Nixon discovers the truth and is taken hostage by the serial killer, before a final confrontation in which she is overpowered by DC Duncan Lennox, charged and thrown into the cells at Sun Hill Station.

Ottis Toole: Ottis Elwood Toole (March 5, 1947 – September 15, 1996) was an American drifter and serial killer who was convicted of six counts of murder.  Like his companion Henry Lee Lucas, Toole made confessions he later recanted, but which resulted in murder convictions.  The discrediting of the case against Lucas for crimes in which Toole had offered corroborating statements created doubts as to whether either was a genuine serial killer or, as Hugh Aynesworth suggested, both were merely compliant interviewees whom police used to clear unsolved murders from the books.  Toole received two death sentences, but on appeal they were commuted to life imprisonment.  He died in his cell from cirrhosis, aged 49.  Police attributed the murder of Adam Walsh to Toole on the basis of recanted statements.  Lucas had backed Toole's confession to the Walsh murder, claiming he had been in possession of the victim's severed head.

Gidget Gein: Bradley Mark "Brad" Stewart (September 11, 1969 – October 8, 2008), known by his stage name Gidget Gein, was an American musician and artist.  He was the second bassist and co-founder of the alternative metal band Marilyn Manson.  His stage name references and dichotomies serial killer Ed Gein and the fictional 1960s surfer girl Gidget.

Madonna Wayne Gacy: Stephen Gregory Bier Jr. (born March 6, 1964, Fort Lauderdale, Florida), formerly known by his stage name Madonna Wayne Gacy and by the nickname Pogo (John Wayne Gacy's clown name), is the former keyboard player for Marilyn Manson, from 1989 to 2007.  His stage name came from the names of the singer Madonna and the serial killer John Wayne Gacy.

Luis Garavito: Luis Alfredo Garavito Cubillos, also known as "La Bestia" ("The Beast") or "Tribilín" (named after Disney character "Goofy"'s Latin American Spanish name) is a Colombian rapist and serial killer.  In 1999, he admitted to the rape, torture and murder of 147 young boys.  His victims, based on the locations of skeletons listed on maps that Garavito drew in prison, could eventually exceed 300; Garavito continues to confess to more murders.  He has been described by local media as "the world's worst serial killer".  According to the Attorney General's Office and various judicial bodies, Luis Alfredo Garavito is the "second serial killer of the world."  Likewise, the judicial body ruled that all Garavito's sentences total 1853 years and nine days in jail.

Charles Cullen: Charles Edmund Cullen (born February 22, 1960) is a former nurse who is the most prolific serial killer in New Jersey history and is suspected to be the most prolific serial killer in American history.  He confessed to authorities that he killed up to 40 patients during the course of his 16-year nursing career.  But in subsequent interviews with police, psychiatric professionals, and journalists Charles Graeber and Steve Kroft, it became clear that he had killed many more, whom he could not specifically remember by name, though he could often remember details of their case.  Experts have estimated that Charles Cullen may ultimately be responsible for 400 deaths, which would make him the most prolific serial killer in American history.

Olivia Newton Bundy: Brian Tutunick (born March 31, 1968) is an American musician, more famously known as Olivia Newton Bundy, and was the bassist and co-founder of the rock group Marilyn Manson until 1990, when he was replaced by Gidget Gein.  His stage name was created by mixing the names of Olivia Newton-John, singer; and Ted Bundy, serial killer.

Ed Gein: Edward Theodore Gein ( ; August 27, 1906 – July 26, 1984), also known as The Butcher of Plainfield, was an American murderer and body snatcher.  His crimes, committed around his hometown of Plainfield, Wisconsin, gathered widespread notoriety after authorities discovered that Gein had exhumed corpses from local graveyards and fashioned trophies and keepsakes from their bones and skin.  Gein confessed to killing two women – tavern owner Mary Hogan in 1954, and a Plainfield hardware store owner, Bernice Worden in 1957.  Gein was initially found unfit to stand trial and confined to a mental health facility.  In 1968, Gein was found guilty but legally insane of the murder of Worden, and was remanded to psychiatric institutions.  He died at Mendota Mental Health Institute of cancer-induced liver and respiratory failure at age 77 on July 26, 1984.  He is buried next to his family in the Plainfield Cemetery, in a now-unmarked grave.

Permission (magazine): Permission was one of the largest gothic magazines of the 1990s.  Begun in 1992 in Chicago by Jayson Elliot, the first issue appeared as a newsprint 'zine, with a mix of articles about bands (such as Alien Sex Fiend and Young Gods), amateur poetry, disturbing comics (such as a Scott Warren piece on serial killer Ed Gein), and fiction by local industrial musicians such as Jim Marcus (Die Warzaw).

Ed Gein, the Musical: Ed Gein, The Musical is a comedic musical film about the cannibalistic, grave robbing, serial killer Ed Gein.  It premiered in Wisconsin January 2010 and stars Dan Davies who also co-produced and wrote the screenplay.  It was directed by Steve Russell.  The film aired on PBS and the Retro TV Network.

Supporting paragraphs: Gidget Gein Ed Gein
Answer: 1984