*Data Source: County Court Records Rutherfordton, NC and FHL # 6418151
Name: Elizabeth Wood
Spouse: George Tanner
Marriage Date: 7 Apr 1821
Marriage County: Rutherford
Marriage State: North Carolina
Source: County Court Records at Rutherfordton, NC & Family
*North Carolina, Index to Marriage Bonds, 1741-1868
Name: Elizabeth Wood
Gender: Female
Spouse: George Tanner
Spouse Gender: Male
Bond Date: 7 Apr 1821
Bond #: 000136285
Level Info: North Carolina Marriage Bonds, 1741-1868
ImageNum: 008860
County: Rutherford
Record #: 01 298
Bondsman: Daniel Tanner
Witness: R K Wilson
*U.S. Federal Census Mortality Schedules, 1850-1885
Name: Elizabeth Tanner
Gender: Female
Slave: Free
Marital Status: Married
Estimated birth year: abt 1789
Birth Place: North Carolina, USA
Age: 60
Death Date: Jul 1849
Cause of Death: Insanity
Census Year: 1850
Census Place: Militia District 85, Union, Georgia, USA
LINE: 2
I found a family tree that may give you some reference information
Elizabeth Wood
1788–1849
Birth 09 MAY 1788 • St. Mary's County, MD
Death 19 OCT 1849 • Washington County, Georgia, USA
http://person.ancestry.com/tree/4016323/person/7011273036/facts
At this point this is the only arguably conclusive evidence I may find something else in some reading that could give more information. I will let you know.