Odd Person of Note: Myra Davis

From Uncle John's Bathroom Reader:

MYRA DAVIS, Janet Leigh’s body double in the film Psycho

Story: Davis was Leigh’s stand-in, she was one of several people who provided the voice of Norman Bates’s mother, and it was her hand that was seen in the famous shower scene in which Leigh’s character is stabbed to death.
Final Irony: On July 3, 1988, Davis was found strangled in her Los Angeles home, murdered by a 31-year-old "caretaker and handyman" … just like the character portrayed by Anthony Perkins in Psycho.

List of other Ironic Deaths here.