On January 20, 1875, the Texas Legislature authorized Governor Richard B. Hubbard to offer a $4,000 reward for Hardin's arrest. An undercover Texas Ranger named Jack Duncan intercepted a letter sent to Hardin's father-in-law by Hardin's brother-in-law, Joshua Robert "Brown" Bowen. The letter mentioned that Hardin was hiding out on the Alabama-Florida border using the name "James W. Swain". In his autobiography, Hardin admitted that he had "adopted" this alias from Brenham, Texas, Town Marshal Henry Swain, who had married a cousin of Hardin's named Molly Parks.