I have William STANCIL as oldest son of my 4G Aunt Priscella PEACOCK (c.1784-1825) and Godfrey Stancil/Stansill (1777-aft 1850). My source is "Birds of A Feather: Origins of the Southern Peacocks" by John J, Pierce, c1984 John J. Pierce and Peacock Family Association of the South. It shows William's wife as Milly, and children as:
1. M Child: Allen STANSILL - Birth: 1833

2. F Child: Nancy STANSILL - Birth: 1834

3. F Child: Mourning STANSILL - Birth: 1836

4. M Child: Patia STANSILL = Birth: 1838

5. M Child: Winchester STANSILL - Birth: 1840

6. M Child: Elias STANSILL - Birth: 1842

7. M Child: Gaston STANSILL - Birth: 1844

8. F Child: Cherry STANSILL - Birth: 1846

9. M Child: John STANSILL - Birth: 1847

Hope this helps - Ray