Biography:Lloyd Estel Copas (July 15, 1913 – March 5, 1963), known by his stage name Cowboy Copas, was an American country music singer popular from the 1940s until his death in the 1963 plane crash that also killed country stars Patsy Cline and Hawkshaw Hawkins. He was a member of the Grand Ole Opry. From Wikipedia, the free encyclopedia.