This is the only thing I found in Ancestry and FamilySearch.
1870 Jackson, Clark, MO
George W. Fleming, b. VA, 34, farmer
Mary A., wife, b. OH, 32
Sarah A., b. MO, 7
William A., b. MO, 6
Hiram, b. MO, 4
Joseph, b. MO, 3
Eddie, b. MO, 0
Zachariah Fleming, b. VA, 22, farm hand
The Oregon County Genealogical Society, www.rootsweb.ancestry.com/~mooregon/ocgs.htm
might have more info about the Fleming family in Oregon Co. Successful Searching!