List of Texas County Seat Name Etymologies

County Seat	County	Named for
San Angelo	Tom Green	Named San Angela by founder Bartholomew DeWitt after an unknown woman named Angela, possibly a nun sister-in-law or a wife Carolina Angela. Emended to San Angelo after the postal service complained of the ungrammatical construction.
San Antonio	Bexar	Named for the San Antonio River, discovered on the Catholic Feast of Saint Anthony of Padua
San Augustine	San Augustine	Uncertain, but most likely for Saint Augustine of Hippo
San Diego	Duval	Nearby San Diego Creek, presumably named after Saint Didacus of Alcalá
San Marcos	Hays	Nearby San Marcos River, mistakenly named for original San Marcos (probably either the current Colorado or Navidad), which was discovered on the Catholic Feast of Saint Mark the Evangelist
San Saba	San Saba	Nearby San Saba River, which was discovered on the Catholic Feast of Saint Sabbas the Sanctified
Sanderson	Terrell	Thomas P. Sanderson, a construction engineer
Sarita	Kenedy	Sarita Kenedy, daughter of ranch owner John G. Kenedy
Seminole	Gaines	Nearby Seminole watering holes
Seguin	Guadalupe	Juan Seguín, Tejano soldier in the Texan Revolution
Seymour	Baylor	Uncertain: The most common version is the name was chosen to honor a local cowboy named Seymour Munday, but other versions report that the name was simply chosen by settler J.W. Fullock or that it was selected to honor New York Governor Horatio Seymour.
Sherman	Grayson	General Sidney Sherman, hero of the Texas Revolution and man credited with the battle cry "Remember the Alamo!"
Sierra Blanca	Hudspeth	Nearby Sierra Blanca Mountain
Silverton	Briscoe	Named by founder Thomas J. Braidfoot.
Sinton	San Patricio	A major stock-holder in the Coleman-Fulton Pasture Company
Snyder	Scurry	William Henry Snyder, a merchant and buffalo hunter who operated a trading post in the area
Sonora	Sutton	Sonora, Mexico, hometown of a family servant of landowner Charles G. Adams
Spearman	Hansford	Railroad executive Thomas E. Spearman
Stanton	Martin	Supreme Court Justice Edwin McMasters Stanton
Stephenville	Erath	Landowner John M. Stephens
Sterling City	Sterling	W.S. Sterling, an early settler
Stinnett	Hutchinson	Albert Sidney Stinnett of Amarillo, who helped purchase the right-of-way for the railroad
Stratford	Sherman	Stratford Hall Plantation, the Virginia boyhood home of Confederate General Robert E. Lee
Sulphur Springs	Hopkins	Nearby sulphur springs
Sweetwater	Nolan	Nearby Sweetwater Creek