I've been looking back through the 1850 Choctaw Co., MS real closely, hoping to be able to find John's brother Jacob, but to no avail. However, another long hard look at John's household makes me change his age from "38" to 35, Sarah's is 33, and Mary's is definitely 8.
I think we need to eliminate "Sarah Warbington" as one of John & Sarah's children. There is no "Sarah" in his 1850 Choctaw Co., MS Census, nor in my notes of his 1860 Lauderdale Co., MS Census (I will go back and double-check that census roll. However, there was a "23 years old Sarah Warbington, Seamstress" found in the 1860 Lauderdale Co., MS Census of a blacksmith named James Taylor----probably doing some sewing for his two young children since there was no wife listed. [I'm wondering now if she could have been the daughter-in-law (also named "Sarah") of Samuel B. Warbington, Sr.]
The "Clara C. Warbington that md. J. W. Lee in Lauderdale Co., MS" that at times has been suggested as a child of John & Sarah----looks like she should also be eliminated. We will need to find out who these two women belong to.
Here's a rundown of all the censuses I have on John & Sarah:
Fayette Co., AL 1840: John Warbington 1 male under 5, b. bet. 1835-1840 1 male of 20 under 30, b. bet. 1810-1820 2 females under 5, b. bet. 1835-1840 1 female of 20 under 30, b. bet. 1835-1840
Choctaw Co., MS 1850: John Wa(rb or sh)____M35Farmerb. TN Sarah E."F33b. TN Thomas"M15"b. AL Elenaor"F14b. AL Nancy"F12b. AL Mary"F8b. MS Adaline"F5b. MS John"M3b. MS William"M4b. MS
Lauderdale CO., MS: J. WarbingtonM45Farmerb. AL Sarah"F50Dom. bus.b. TN Elizabeth "F23b. AL Mary"F18b. AL Permelia"F14b. MS John"M12b. MS Lucinda"F8b. MS George"M6b. MS Emily P."F2b. MS [Ther son, William, died 26 Dec 1859 of an accidental sunshot wound.]
Choctaw Co., MS 1870 Census: J. M. WebbingtonM57Farmerb. TN Sarah"F53Dom. bus.b. TN Lucinda J. "F18b. MS Emily P."F12b. MS