Whilst at the Newberry Library in Chicago, I read the following in Henry Hamilton's journal of the Vincennes campaign, there is an interesting account of the links between the southern Indians, especially the Creeks, and the midwestern Indians, especially the Shawnees.

26th [ed. January, 1779]-- The Chiefs of the following nations assembled at the fort this morning--Shawanese, Delawares, Wyandatts, Ottawas Chippoweys, Miamis, Ouiattanons, Quiquaboes, and Peankashaas--(239)