Please go to the FamilySearch.org website (Latter Day Saints) - they have the TN Death Records that you will be able to download at no cost. You'll need to create a user-name & password to have access to their records which only takes a few minutes and well worth it :)
All 3 of the names you mention below are available. The Fannie/Sarah Fannie Sanders is listed as Sarah Francis Sanders.
Best of luck,