This small tribe, which is now regarded as Atakapan in language, lived in southeastern Texas during the eighteenth century. The Patiris seem to have ranged over the territory that lay between that of the Bidai and the Akokisa Indians. This would place them in the area between Houston and Huntsville. From 1749 to 1751 the Patiris, along with other Atakapan-speaking groups, particularly the Akokisas, Bidais, and Deadoses, were represented at San Ildefonso Mission near what is now Rockdale. After this the Patiris dropped out of sight. They probably lost their ethnic identity among the Bidais and Akokisas, who survived into the nineteenth century. Sound correspondences in the names suggest that the Patiris may have been the same people as the Petaros, who in the late seventeenth century were listed in records of the La Salle expedition as living in the same general area.