Another boy's name turns up in the Mordecai rolls. Young Elbert Cheek attended the school for both sessions of 1813. Only local boys attended the school (no boarding room for boys), so we know he was from Warrenton.
As usual with historical lookups, it's easier to find a man--men owned property, men didn't change their surname on marriage, and men used fewer nicknames (no Martha=Patsy problem). So it's quick to find that Elbert Alston Cheek was born on Valentine's Day in 1803, eldest child of Robert Tines (or Tynes) Cheek (1772-1841) and Mary Hinton Alston (1782-1864), according to a family Bible. The Cheeks owned a plantation called "Shady Oaks" outside Warrenton, and Robert T. Cheek ran a hotel in town. By the time he attended the Mordecai school as a ten year old, Elbert had a younger brother and three younger sisters (another younger brother died in infancy). Four more brothers and another sister arrived after Elbert's time at the school. He married Mary Sue Hayes (b. 1803) in 1825, in Warrenton; they had nine children together between 1827 and 1851. Their adult children lived in Mississippi and Kentucky, with a few staying near Warrenton. (Same details given here, with slightly different dates in some instances.) Elbert Cheek is mentioned in the 1924 local history "Glimpses of Old Warrenton," in passing (as the father of a local Civil War veteran, Col. William H. Cheek--more about William here).
(Robert Tynes Cheek pulled a bit of a stunt for genealogists: he left an extra $500 in his will to each grandson named Robert. So there were four grandsons named Robert, including Elbert's oldest son.)
Found an obituary for an Elbert Alston Cheek V, who died young in 2008--must be some kind of kin, because that's not a common set of names.