Richard M. Gaines

Richard Mathews Gaines (February 28, 1802–August 2, 1871), often signing as R. M. Gaines, was a 19th-century American lawyer and politician. He served as the Mississippi state attorney general for four years in the 1830s. He was the United States federal district attorney in southern Mississippi for almost 15 years, originally appointed by Andrew Jackson. He moved to Arkansas around 1850 where he had a plantation and was elected to the Arkansas State Senate. He served as a Confederate presidential elector in 1861.