[3] Instead of joining the army when the Texas War of Independence started, Augustus and his brother engaged in keeping supply channels open.
[3] Augustus and John Allen continued to raise money and operate as receivers and dispensers of supplies and funds for the war effort without charge.
[4] Financed by an inheritance received by Augustus' wife, Charlotte, on August 26, 1836, the Allen brothers purchased 6,600 acres (27 km2) along the Buffalo Bayou for $5,000, to establish a new city.
[2] Soon, Allen's health began to fail, and he decided to leave Houston, signing over to his wife, whom he had never divorced, most of what remained of his many enterprises.
These offices gave him control of the consular affairs of the United States for the entire Isthmus of Tehuantepec, a commercially important position.
Soon after arriving there, he contracted pneumonia,[2] died on Monday, January 11, 1864, aged 58 in Washington, D.C., and was buried in the Green-Wood Cemetery in Brooklyn, New York.