On December 5, 1835 the provisional government of Texas established Jackson Municipality. Jackson County, one of the original counties of Texas, was formed in 1836 from the old Mexican municipality of Jackson. Both the municipality and the county were named after President Andrew Jackson. Camp Independence, near Texana, served as campsite and training ground for the Army of the Republic of Texas. Texana, in addition to being a military post, a port of entry, and an important trading center, was also named the county seat in 1836. Throughout the period of the republic and early statehood, the land area of Jackson County was in a condition of flux. In 1844 officials subtracted a narrow strip now in Matagorda and Wharton counties, but added a wedge of what is now Wharton County and a western section between the Lavaca River and Arenosa Creek. Jackson County lost large sections on the north, south, and east to the newly formed Calhoun, Wharton, and Lavaca counties in 1846. The western boundary, however, was extended to Arenosa Creek. In 1848 more eastern acreage was ceded to Matagorda County. In January 1883 Edna became the county seat. -Handbook of Texas Online: Jackson County.