Evidently Delgado uses the word Tawasa much as Calderon does for at least part of the Upper Creeks besides its special application to the town itself. He seems to differentiate between the province of Tawasa (or Tabasa) near the junction of the Coosa and Tallapoosa and the Tukabahchee province which we may assume was around the bend of the Tallapoosa and above.
Swanton, John R.
"Comments on the Delgado Papers,"
Florida Historical Quarterly: Vol. 16
, Article 8.
Available at: https://stars.library.ucf.edu/fhq/vol16/iss2/8