Jerome B. Alexander, soldier of the Republic of Texas, moved to Texas in January 1832. During the Texas Revolution he served as a private in Capt. John York's volunteer company at the siege of Bexar and as a private in Capt. Moseley Baker's Company D of Col. Edward Burleson's First Regiment, Texas Volunteers, at the battle of San Jacinto. He was elected clerk of the Third Judicial District court in January 1838 and was reelected in January 1842. During this period he was a resident of Fayette County with title to 200 acres of land and an additional 611 acres under survey. He also owned two town lots in La Grange, four horses, fifty cattle, and a silver watch. He had an additional 1,476 acres under survey in Gonzales County.
When Adrián Woll raided San Antonio in 1842, Alexander was elected lieutenant in the volunteer company of Capt. Nicholas M. Dawson. He was killed in action in the infamous Dawson Massacre on September 18, 1842. He was buried with his companions at Monument Hill near La Grange, Fayette County.