From familysearch.org , it looks like he married Hannah.
John S Duncan
United States Census, 1850
Name |
John S Duncan |
Event Type |
Census |
Event Year |
1850 |
Event Place |
Giles county, Giles, Virginia, United States |
Gender |
Male |
Age |
61 |
Race |
White |
Birth Year (Estimated) |
1789 |
Birthplace |
Virginia |
House Number |
414 |
CITING THIS RECORD
"United States Census, 1850," database with images, FamilySearch(https://familysearch.org/ark:/61903/1:1:M8D9-5YP : accessed 21 May 2016), John S Duncan, Giles county, Giles, Virginia, United States; citing family 397, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).