The Indians who have inhabited this region belong to various groups, some of which have migrated hither in historical times (as the Shawnee). The most important are the Muskogian tribes, of which the Creek, Choctaw, Chickasaw, Seminole, and Natchez are members. However, we find isolated tribes belonging to the large northern and eastern groups of Iroquois and Algonquin Indians, as well as Siouan from the Great Plains, and several less important peoples who came into this area from the Ohio valley.
"Mexican Resemblances in the Southeastern Area of the United States,"
Florida Historical Quarterly: Vol. 19
, Article 11.
Available at: https://stars.library.ucf.edu/fhq/vol19/iss2/11