SIANSI INDIANS. In the early eighteenth century the Siansi Indians, who appear to have spoken a Coahuiltecan language, were reported at San Francisco Solano Mission (south of the Rio Grande near the site of future Eagle Pass). When this mission was moved to San Antonio and became known as San Antonio de Valero Mission, the Siansis moved with it. It has been suggested that Siansi and Sencase are variants of the name Secmoco, but this has not been proved.
Herbert Eugene Bolton, Texas in the Middle Eighteenth Century (Berkeley: University of California Press, 1915; rpt., Austin: University of Texas Press, 1970). Frederick Webb Hodge, ed., Handbook of American Indians North of Mexico (2 vols., Washington: GPO, 1907, 1910; rpt., New York: Pageant, 1959). J. R. Swanton, Linguistic Material from the Tribes of Southern Texas and Northeastern Mexico (Washington: Smithsonian Institution, 1940).
The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article.Thomas N. Campbell, "SIANSI INDIANS," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/bms28), accessed June 20, 2013. Published by the Texas State Historical Association.