Possible 1840 Census. If you look at the image it gives the number of males and females and age ranges. It looks like a good match for the family in Cobb County on the 1850 Census but check this yourself try to match Mary and her children in 1850 with the 1840 age ranges.

DS Waterson head of household living in Capt Simms District, Fayette, Georgia, United States

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