Scates was one of the two representatives from Jefferson Municipality at the Convention of 1836 at Washington-on-the-Brazos and there signed the Declaration of Independence. When he left the convention, Scates rejoined the army and participated in the battle of San Jacinto in Benjamin F. Bryant's company of Sabine Volunteers. When Bryant's company was disbanded, Scates joined Hayden S. Arnold's Nacogdoches Company. After the revolution he settled in Washington County, where he married Theodocia Clardy Smith on November 17, 1836; two children were born to them. By 1840 Scates had title to 150 acres in Fayette County; he also appears on that county's 1846 poll-tax list. After his first wife's death, he married Sarah McMillan, on March 25, 1850; they had five children. At the age of sixty-two, Scates enlisted as a private in Company F, Fourth Battalion, Texas Cavalry, Texas State Troops, on October 9, 1863. He died on February 22, 1882, and was buried near Osage, Colorado County. In 1929 the state of Texas reinterred the bodies of Scates and his second wife in the State Cemetery.
30° 15.916, -097° 43.634
Texas State Cemetery