He joined Capt. William Ware's Company D of Col. Sidney Sherman's Second Regiment, Texas Volunteers, on March 12, 1836, and was elected second lieutenant. He was killed in action on April 21, 1836, at San Jacinto. Lamb County was named in his honor in 1876. His widow later married Jonathan A. McGary, who became the administrator of Lamb's estate.
29° 45.232, -095° 05.363
San Jacinto Battleground State Historic Site