Texans You Should Know is a series highlighting overlooked figures and events from Texas history. On May 12, 1966, spectators packed into a Los Angeles County Superior Court building. They were eagerly waiting to find out if the elegant woman sitting among them was Corinne Griffith—acclaimed early-Hollywood actress and one of the wealthiest women in the world at the time—or just a stand-in who had replaced her. In an unexpected turn of events for an otherwise straightforward annulment hearing, the plaintiff didn’t purport to be the renowned actress. She claimed to be an imposter hired by Griffith. A witness was called to the stand: Betty Blythe, a star who had worked with the Texarkana-born actress in the late 1910s. “Is Corinne Griffith in the room?” the defense…