I really can't say who Williams parents were. Several years ago someone send me some info on James Halbert an his wife Matilda Burrow. They said William was one of their children and he was the one that married Nancy Chandler. But the dates did not match They were not married until 17 Dec 1834 and will was born abt 1825 according to the census. I discarded it.
It took me years to find out what happen to William and Nancy after they were married in Lauderdale Co AL 8 Mar 1841 and then proving that was the ones in MS. was another story. Finally Found a Death Cert. from one of their children Lewis Augustus that listed them as as his parents and listed their birth place as AL. I haven't work on this for about 2 years but I will look through my files and see what I can come up with.