I was able to find some of my family in the 1850 handwritten school census for Pike Co., MS. I looked through the census, page by page and checked the names against my records. The census does not list the names of the children, just the parent. The following were firm matches. There were others I’d like to say were matches but there were not enough details for that.
The children of Warren Jackson Alford, my 2x great grand uncle
[Martha Jane b 1842 & Cynthia Elizabeth b 1844]
The children of William Alford, my half 3x great grand uncle
3 males & 2 females
[probably Jackson, Milton, Jesse, Calperna & Clarasy]
The children of Davis Brumfield, my 3x great grand uncle
3 males & 3 females
[probably Jesse, Isaac, Elisha, Eveline, Angeline & Emily]
The children of Jeremiah Smith, my 3x great grand uncle
[William b 1842 & Ancil b 1845]
"Mississippi Enumeration of Educable Children, 1850-1892; 1908-1957," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QK6W-7YYB : accessed 21 March 2016), 1850; citing School enrollment, , Pike, Mississippi, United States, Mississippi Department of Archives & History, Jackson.