Is tuscawilla an American Indian name?

Yes, as far as I have seen. Tuscawilla was the wife of Chief Micanopy. Chief Micanopy fired the opening shots of the Second Semionole War. The town of Micanopy, Fl bears his name and the lake south of the town bears his wife's name. You can find out more by going to the Micanopy Historical Museum website (check the link under the related links section).