Doc Holliday

(Wikipedia) John Henry "Doc" Holliday (August 14, 1851 – November 8, 1887) was an American gambler, gunfighter, and dentist, and a good friend of Wyatt Earp. He is best known for his role as a temporary deputy marshal in the events leading up to and following the Gunfight at the O.K. Corral.
At age 21 Holliday earned a degree in dentistry from the Pennsylvania College of Dental Surgery. He set up practice in Atlanta, Georgia, but he was soon diagnosed with tuberculosis, the same disease that had claimed his mother when he was 15, having acquired it while tending to her needs while she was still in the contagious phase of the illness. Hoping the climate in the American Southwest would ease his symptoms, he moved to that region and became a gambler ... Continued