I just check the the US 1880 Census Bradford Co., FL. In the census it shows your family is white. Normally the census taker marked a person "B" or "M" if they were Indian. Once in a great while he might write "W".
The northern part of FLIndian tribes were Creeks, Miccosukee, Appalachees, Tallahassees and Seminoles. The Seminole Indians moved to South FL. Myra