Jack Leon Ruby (born Jacob Leon Rubenstein; March 25, 1911 – January 3, 1967) was a nightclub operator in Dallas, Texas. Ruby was originally from Chicago, Illinois; he moved to Dallas in 1947. On November 24, 1963, Ruby shot and killed Lee Harvey Oswald, the man who (according to four government investigations)[2] assassinated President John F. Kennedy. A Dallas jury found Ruby guilty of murdering Oswald, and Ruby was sentenced to death. Later, Ruby appealed his conviction and death sentence and was granted a new trial. As the date for his new trial was being set,[3] Ruby became ill and died of a pulmonary embolism due to lung cancer.