Tenn. Code Ann. § 66-26-107: Presumption as to subscription by grantor after thirty years

Where a deed has been registered more than thirty (30) years, but the register has failed to register the name of the grantor or bargainor, it shall be presumed that the name of the grantor or bargainor was subscribed to the deed, and the registration shall be good; and in proving the time when a deed has been registered, the date upon the books may be referred to; or the register may certify the fact as it appears upon the register's books; or the time of registration may be established by parol testimony.