Mark David Chapman
About
Mentally unstable fan who murdered John Lennon on December 8, 1980.
Before Fame
He was a summer camp counselor at YMCA in the 1970s, once winning the Outstanding Counselor award.
Trivia
He made a not guilty insanity plea, but was sentenced to 20 years to life for second degree murder.
Family Life
He married Gloria Abe in 1979.
Associated With
He infamously shot John Lennon four times in the back in 1980.