Andrew Jackson Montgomery. Apr. 4, 1801 - Dec. 3, 1863 Born in Blount County, Tennessee, Andrew Jackson Montgomery came to Texas in 1819 with the James Long Expedition. In 1823, as the first known settler in Montgomery County, he opened a trading post at the crossing of two Indian trails. From his post emerged the town of Montgomery from which Montgomery County took its name. A veteran of the Battle of San Jacinto, Montgomery married Mary Mahulda Farris at age 43, and they had nine children. #8602