The Round Rock, Williamson County, Texas
historical marker
In Williamson County, Texas, a historical marker, erected in 1975 by the Texas Historical Commission, designates "The Round Rock." This large, mostly round, anvil-shaped limestone rock sits in the middle of Brushy Creek, near Chisholm Trail Street. In the 1840s, this rock served as a vital low-water crossing for wagons, horses, and cattle. Travelers used it as a guide for safe passage across the creek. Wagon wheel tracks are still visible near the rock. The settlement was initially known as Brushy Creek. Thomas C. Oatts became the first postmaster in 1851. By 1854, postal authorities requested a new name because another Texas community already used "Brushy Creek." Oatts, who often fished by the rock with Jacob M. Harrell, suggested "Round Rock" in its honor. The name was officially adopted on August 24, 1854. This rock also marked a crucial crossing point for the Chisholm Trail, used by cattle drivers from 1867 to 1884. The Round Rock represents the city's origins as a vital crossing point and a key landmark in early Texas transportation.