Obtain and complete an application from your County Clerk's office. Complete Tennessee Notary Application.This Notary Application is a legal binding document between you and Blount County. Enter your legal name as shown on your Notary Commission, select the County where you are commissioned, and input your Commission and Expiration Date. When you're directed to the fillable application site, click on the small calendar icon, select a date, then simply fill out the online form and click submit. Applicants may either complete the online application at the link above, or download and print the Application for Notary Public . Welcome to the new TNCountyClerk. Com Offering online payment and information lookup for your county clerk office. The Williamson County Clerk is a Tennessee constitutionally elected official who serves the residents of Williamson County for a four-year term. The easiest way is to call or visit the county clerk's website for information on how to apply for a Tennessee notary commission.