Found the graves on FindAGrave.com. A P and Henrietta are buried in Manship Cemetery in Tatum.
A.P. Williams Aug 1, 1842 died Apr 21, 1918
Henrietta b May 21, 1850 died Nov 9 1894
For some reason the dau of HT and ? Williams, Mary Williams d Oct 23, 1894 and was buried in the Hebron Cemeetery.
Children Mollie, James and Flora are buried in the Manship Cemetery as well.
Fannie Speight Covington Williams is in the Hebron Cemetery.
Hope this helps