No, that's not it. Francis' wife was Susannah Jane Wyatt. They were married in 1858, and Susannah was still alive when Francis died. John H Childer's mother is Caroline E Childers, and she was John's mother as evidenced by the court fight over the cotton. Francis Pritchett had six children, but only five are referenced in this document, with John H Childers also recieving a 1/6. I have presumed the sixth was dead, but perhaps not. Since Childers was not a son, it makes sense if he was married to one of the Pritchett daughters. All of Francis' children were underage when he died, so it's not likely they sold any of the land. It's possible Susannah Wyatt Pritchett chose to take a child's share at her husband's death, and gave it to Caroline. Susannah had a sister Caroline who hasn't been documented, so I'm wondering if this is her and she joined her sister, also widowed, following Childer's death in Schley.
Caroline married John Childers in Georgia after his first wife's death. Your information indicated she was a Cosby, which doesn't fit with the Wyatt theory. Do you know that was her maiden name?
John's children by his first wife, Nancy Hammock, sued him in 1856 because he refused to give them slaves left to them by their grandfather. Nancy was referenced as being deceased about that time. Since John was in Talbot in 1856, and in Schley in 1860, he married Caroline during that time period. John H Childers was born about 1859, as he is 11 months old on the 1860 census.
The Childers family was associated with the Pritchett family in Schley, although somehwat indirectly, through marriage of William Childers, John and Nancy's son.