Singer Marilyn Manson's name is based on actress Marilyn Monroe and a man convicted of killing what actress?
Marilyn Manson:  His stage name was formed by combining and juxtaposing the names of two American pop cultural icons: actress Marilyn Monroe and cult leader Charles Manson. Charles Manson:  In 1971 he was found guilty of first-degree murder and conspiracy to commit murder for the deaths of seven people – most notably of the actress Sharon Tate – all of which were carried out by members of the group at his instruction.
Sharon Tate