Round Rock br/Williamson County, Texas br/30 31.207' N 97 38.631' W br/br/Text: 1/2 mile South to the site of Kenney's Fort First settlement in Williamson County. Erected as a home by Dr. Thomas Kenney and Joseph Barnhart in the spring of 1839. Served as a place of defense during Indian raids. Rendezvous of the Santa Fe Expedition, 1841. Here the archives of the Republic of Texas en route to Washington-on-the-Brazos were captured on December 31, 1842 and returned to Austin.