The Round O Plantation was once in the hands of the Williams family.
I do have a list of names buried in The Round O Cemetery - African American

I would gladly look up family names for you.
Sandra

In a message dated 3/20/00 3:45:15 PM US Eastern Standard Time, 
[email protected] writes:

<< This Round O is very interesting I have several Williams and Campbell
 ancestors that were associated with this Round O.  I was not sure if it was
 the name of a plantation or a community.  I have a Archibald Lawrence
 Campbell, b 10-21-1822, Walterboro, married a Mary Blake Sanders, b
 8-2-1826, Round O.  Can you shed some more light on this area.  Thanks.
 Gerald Greene, [email protected]   Researching Campbells, Williams families
 from Colleton County and King family from the Charleston area.  Thanks >>