Cahinnio Indians. A tribe visited by Cavelier de la Salle on his return from Texas in 1687, at which time they probably resided in south west Arkansas, near Red River. They were possibly more closely allied to the northern tribes of the Caddo confederacy (the Kadohadacho, Natchitoches, Yatasi, etc.) than to the southern tribes, with whom, according to Joutel, they were at enmity. During the vicissitudes of the 18th century the tribe moved north west, and in 1763 were on upper Arkansas River, near their old allies, the Mento. By the close of the 18th century they were extinct as a tribe.