Do you know who the I-on-I Tribe was? If so, please tell us about them. We found reference to them in one treaty.

 

Treaty With The Comanche, Aionai, Anadarko, Caddo, Etc., 1846
Treaty with the Comanches and other tribes. Articles of a treaty made and concluded at Council Springs in the county of Robinson, Texas, near the Brazos River, this 15th day of May, A. D. 1846, between P. M. Butler and M. G. Lewis, commissioners on the part of the United States, of the one part, and the undersigned chiefs, counselors, and warriors of the Comanche, I-on-i, Ana-da-ca, Cadoe, Lepan, Long-wha, Keechy, Tah-wa-carro, Wichita, and Wacoe tribes of Indians, and their associate bands, in behalf of their said tribes, on the other part.