CALHOUN, TEXAS (Calhoun County). Calhoun, on Matagorda Island, was projected by the Republic of Texas^qv in January 1839, when Congress directed the secretary of the treasury to have 640 acres on the north end of the island surveyed as the site for a seaport. Lots in the town went on sale in June 1841. A customhouse was established, and Alexander Somervell^qv was appointed collector of customs. The town failed to prosper, however, and the customhouse was moved to Port Caballo. Calhoun ceased to exist by 1845.