Adai's name has also been written Adaizan, Adaizi, Adaise, Adahi, Adaes, Adees, Atayos, and Nadais.[5]
Language
The extinct Adai language was once thought to be Caddoan,[1] but may be a language isolate and remains unclassified because of a lack of attestation. John Sibley wrote that the Adai language "differs from all others, and is so difficult to speak or understand that no nation can speak ten words of it."[3] A list of approximately 250 words in Adai was recorded.[3]
French explorer Jean-Baptiste Bénard de la Harpe wrote in 1719 that the Adai were helpful to French traders. Then, they lived in villages along the Red River from Louisiana into Texas past the Sabine River.[1] Conflicts between the French and Spanish, introduced diseases, and alcohol took a toll on the Adai, and they are almost gone by 1778.[1]
Archaeologists have identified their pottery styles in the 1770s as being increasingly tempered with bone and named their ceramic types "Patton Engraved" and "Emory Incised".[5]
American Indian agent John Sibley recorded a small Adai village that became known as the Lac Madon site, which was populated through 1820.[5] He wrote that there were only "twenty men of them remaining, but more women," while Rev. Jedidiah Morse recorded only 30 surviving Adai by 1820.[3]
Ethnographer Henry Rowe Schoolcraft recorded 27 Adai in 1825, and ethnographer John Reed Swanton wrote, "they are now entirely merged with the other Caddo. ... Although the tribal name is remembered, the tribe itself is now wholly merged with the peoples which go under the name of 'Caddo.'"[2]
† extinct language / ≠ extinct tribe / >< early, obsolete name of Indigenous tribe / ° people absorbed into other tribe(s) / * headquartered in Oklahoma today