Seguin br/Guadalupe County, Texas br/29 33.086' N 97 58.303' W br/br/Text: One of the earliest explored rivers in Texas. Named for Our Lady of Guadalupe by Spaniard Alonso de Leon in 1689. During 1691-1693, Domingo Teran de Los Rios, Spanish Governor of Texas, maintained a colony on the Guadalupe. In early Anglo-American settlement, 30 or 40 families located along its bank, which formed a boundary of the Power-Hewetson Irish Colony. Near the mouth of the river, historic Victoria was founded, and 60 miles above was Gonzales, where the first shot for Texas freedom was fired, Oct. 2, 1835. The Guadalupe is 250 miles long.