Start with the recorded deed and any signed agreement or court order that addresses the Jackson house. The deed can show whose names are recorded as owners, but the other papers may also matter to the sale. Do not assume that one spouse can sign for the other.
The title company reviews the recorded ownership and the papers that apply, then confirms the signatures and closing documents it needs. A Tennessee family-law attorney can explain what an order means for your situation. You can talk with us while those documents are being reviewed.