After spending some time raising money and volunteers in Tennessee for the Texas army, Childress left permanently for Texas. He arrived at the Red River on December 13, 1835, and reached Robertson's colony on January 9, 1836. The following February he and his uncle were elected to represent Milam Municipality at the Convention of 1836. Childress called the convention to order and subsequently introduced a resolution authorizing a committee of five members to draft a declaration of independence. Upon adoption of the resolution, he was named chairman of the committee and is almost universally acknowledged as the primary author of the document.
On March 19 President David G. Burnet sent Robert Hamilton and Childress, whose family was on friendly terms with President Andrew Jackson, to Washington as diplomatic agents for the Republic of Texas. They were instructed to negotiate for recognition of the republic. In late May 1836 their mission was terminated when they were replaced by James Collinsworth and Peter W. Grayson.
On December 12, 1836, Childress married Rebecca Stuart Read Jennings; they had two daughters. Childress returned to Texas three times - in 1837, 1839, and 1841 - to open law offices, first in Houston, then Galveston. Each time he was unsuccessful in establishing a practice that would support his family. On October 6, 1841, while living in Galveston, he slashed his abdomen with a Bowie knife and died soon thereafter. On August 21, 1876, Childress County was formed and named in his honor.
29° 17.616, -094° 48.701
Trinity Episcopal Cemetery