Mark David Chapman
As years went by, Chapman had little success and much trouble in his personal life. His hopes to become a missionary were dashed when a civil war started in the country where he went on a mission. He returned to the United States, and later moved to Hawaii. In 1979, he married a Japanese-American woman, as Lennon had done, but Chapman's marriage was unhappy. Chapman worked a low-paying job, as a security guard.