Pat,
I needed a break from mowing the yard. A review of "A Register of Columbia County, Florida Cemeteries, 1988" from the Columbia County Historical Society lists the following as buried in Mt. Zion Cemetery:
George W. Waldron - 4/19/1832 - 5/28/1898
Mary A. Waldron - 2/9/1843 - 10/28/1911
Eunice Waldron - 1899
Infant Waldron - no dates
Elias Waldron - 1866-1945
Sarah A. Waldron - 1877-1946
B. B. Waldron - 2/21/1859 - 2/21/1935
George W. Waldron - 11/19/1864 - 11/24/1937
Laura L. Waldron - 2/2/1876 - 1/25/1955
Martha A. E. Waldron - 12/26/1858 - 11/8/1902
Clyde W. Waldron - 1903-1906
Vasso J. Waldron - 7/1/1906 - 7/11/1935
"The material may be used by students and other interested readers whose objective is not for a profit"

Couldn't find anything on Bells Mills.
Tem Moody