Can't find my 3x ggf Jesse Columbus South in a Virginia census for 1870

My 3xggf and his family don't seem to appear in 1870 census.

Jesse Columbus South 1805-1883 born in Grayson County, VA and lived in Washington County, VA  Wife in 1870 was Elizabeth Hodges South, likely children at home in 1870 Robert J., Lucinda Evaline, William? Moses?