Notes on Laws Warren and his family from Sandy Perkins:

His full name is Calvin Laws Warren. He was married to Susan Francis Hopkins, daughter of Ellison Armistead and Jane Deeble Hopkins.
Their children were William Otho Warren, who died July 30, 1887, and Ella Jane Elizabeth Warren Ayers, who married Peter T. H. Ayers.
There are no dates listed for Laws Warren on the marker but going by census records he was born about 1827. He died Between July 1870,
when he was listed in the 1870 census, and June 1879, where he is noted as deceased in the marriage record for his daughter.