"Teyas" was the historical name for a band of Texas Indians probably affiliated with the Apache tribe,
although they might also have been Caddoan or Puebloan. The name "Teya" may have been a Spanish corruption of
the Apache word for "people," ndee, or the Caddo word taysha,
which was also the origin of the name "Texas." Since the Teyas tribe no longer exists as a cultural or
political unit today and few written records remain of them, it's difficult to be sure of their true identity, but Mescalero
people describe them as an Apache offshoot in their oral traditions. If so then they probably merged into
other Apache communities after colonization.
Here are links to our webpages about the Teyas tribe and language: