In a Spanish missionary report of 1691, the Anao Indians were listed among the enemies of the Hasinais of eastern Texas. Twelve names occur on this list, and it is said that two or three of the groups named lived southeast of the Hasinais; the others lived to the west. The identity of the Anaos remains undetermined. It is evident that they were not the same as the Annahos, listed in documents of the La Salle expedition (1687) as allies of the Kadohadachos on the Red River. The Annahos were Osage Indians, whose base area at that time was western Missouri, and there is no record of their having lived as far south as eastern Texas or western Louisiana.