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SECMOCO INDIANS. The Secmoco Indians are known only from baptismal records of San Antonio de Valero Mission at San Antonio. J. R. Swanton listed Secmoco as one of the Coahuiltecan bands. Intermarriage with the Papanacs at the mission suggests that the Secmoco were probably from the same areas as the Papanacs, that is, northeastern Coahuila and the adjoining part of Texas. Sencase, Sepunco, and Sinicu have been suggested as possible synonyms for Secmoco, but no evidence for these identifications can be found. Swanton listed a similar name, Chemoco (Chimoco), as a Coahuiltecan band, but this resulted from an error. The Chemoco were Indians at San Francisco Solano in California, not at the mission of the same name near Eagle Pass.


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).

Thomas N. Campbell


The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article.

Thomas N. Campbell, "SECMOCO INDIANS," Handbook of Texas Online (, accessed November 27, 2015. Uploaded on June 15, 2010. Published by the Texas State Historical Association.