During Texas' fight for independence, Avery's step-father, Jennings, was said to have perished at the siege of the Alamo, while Avery joined Captain Jesse Billingsley's Company of Mina (Bastrop) Volunteers on February 28, 1836. The Mina Volunteers eventually became Company C of General Edward Burleson's regiment, fought at the Battle of San Jacinto. Company C was made up of settlers who lived in and around Bastrop County.
Because of his service for Texas, Avery was issued, on May 22, 1838, 640 acres of land. On March 20, 1840, he also received another 320 acres for serving in the army from February 28 to June 1, 1836. Ultimately, the Averys moved to Williamson County and settled on Brushy Creek, near Rice's Crossing, where Elzina died on March 1, 1870. Willis died on July 17, 1889, and both were buried in the family cemetery on their property. On July 3, 1938, the Averys' remains were moved to the Texas State Cemetery in Austin. Source
30° 15.923, -097° 43.649
Texas State Cemetery