Margaret:

There is a Cemetery Book for Clarendon County (also ones for adjoining Sumter and Lee Counties, but its not on-line to my knowledge. They are not very widely distributed. The only two locations I know that have them (I'm sure there are more) are the Clarendon Archives in Manning, and the Sumter District Genealogical Society in Sumter. Why don't you get the numbers and call one of them and ask them to do a lookup. The Clarendon Archives has some odd hours, but I suspect you would be more apt to get a lookup there. Good luck.