Tenn. Code Ann. § 5-2-103: Memorial for division of county

(a) Any person desiring to divide a county shall prefer a memorial to the general assembly for that purpose.

(b) The memorial shall describe the line or lines of the proposed division and be accompanied by a fair and accurate plat of the county to be divided, representing together the old counties and the new one, the survey and plat to be made by a sworn surveyor, and by such surveyor subscribed and certified to be just and true.