Seguín, Juan Nepomuceno, 1806–90, Texas revolutionary and politician, b. San Antonio. He was elected alderman (1829) and mayor (1833) of San Antonio, then formed a militia (1835) to aid the Mexican governor of Texas against President Santa Anna . Seguín soon became involved in the Texas revolution and served at the Alamo , where he was dispatched for reinforcements. After the battle of Gonzales (1835) Seguín was commissioned a captain by Stephen F. Austin . He fought in the battle of San Jacinto (1836) and accepted the surrender of San Antonio (1836), after which he was military commander (1836–37) there. He served (1837–40) in the Texas senate, where he lobbied to have the republic's laws printed in Spanish, and was again mayor (1840–42) of San Antonio. Troubles with Anglo-Americans led him to leave for Mexico, where he was coerced into joining the army and fought against the United States during the Mexican War . He returned to Texas in 1848, but later retired to Nuevo Laredo, Mexico.
See his memoirs and selected correspondence ed. by J. F. de la Teja (1991).