<P> Susan McKey Thomas, the daughter of Doc's uncle Thomas S. McKey, said her father told her: "' They rode in on the Negroes in swimming in a part of the Withlacoochee River that "Doc" and his friends had cleared to be used as their swimming hole . The presence of the Negroes in their swimming hole enraged "Doc," and he drew his pistol - shooting over their heads to scare them off . Papa said, "He shot over their heads!" "' </P> <P> According to Masterson's story, Holliday leveled a double - barreled shotgun at them, and when they exited the swimming hole, killed two of the youths . Some family members thought it best that Holliday leave the state, but other members of Holliday's family dispute those accounts . Researcher and historian Gary Roberts searched for contemporary evidence of the event for many months without success . Earp author Allen Barra also searched for evidence corroborating the incident and found no credibility in Masterson's story . </P> <P> Shortly after beginning his dental practice, Holliday was diagnosed with tuberculosis . He was given only a few months to live, but was told that a drier and warmer climate might slow the deterioration of his health . After Dr. Ford's return in September, Holliday left for Dallas, Texas, the "last big city before the uncivilized Western Frontier ." </P> <P> When he arrived in Dallas, Holliday partnered with a friend of his father's, Dr. John A. Seegar . They won awards for their dental work at the Annual Fair of the North Texas Agricultural, Mechanical, and Blood Stock Association at the Dallas County Fair . They received all three awards: "Best set of teeth in gold", "Best in vulcanized rubber", and "Best set of artificial teeth and dental ware ." Their office was located along Elm Street, between Market and Austin Streets . They dissolved the practice on March 2, 1874, and Holliday opened his own practice over the Dallas County Bank at the corner of Main and Lamar Streets . </P>

Who is the earliest dentist whose name is known and in what country or region did he reside