After 1832 he kept a ferry at Brazoria, where he ran a mercantile business with his son-in-law, and later he was a stockholder in the San Saba Colonization Company and receiver of stock for the Brazos and Galveston Railroad. He acquired leagues of land at Hall's Bayou in Brazoria County and in Galveston and Bastrop counties, and raised sugar, cotton, corn, and cattle. By 1833 his daughter, wife, and son-in-law had all died. Though he held slaves for a time, Brigham later signed petitions for free blacks. As one of those instrumental in establishing a Masonic lodge at Brazoria, he served as junior warden there and was also a charter member of the Masonic Grand Lodge of Texas, organized at Houston on December 20, 1837.
|Independence Hall, location of the Declaration signing|
On February 16, 1839, Brigham became a Houston alderman while serving as national treasurer. He left the treasury on April 12, 1840; later that year he was charged with using state funds for private purposes but was cleared. Houston reappointed him treasurer on December 31, 1841, and in 1842 Brigham became mayor of Austin. After the death of his first wife he married Mrs. Ann Johnson Mather, on July 8, 1839. He died on July 3, 1844, at Washington, Texas, where he is buried. A monument was erected by the state of Texas at the burial site in 1936, and Brigham's remains were removed to a site in Washington-on-the-Brazos State Historic Site sometime later.
30° 19.566, -096° 10.165