I have some new information on the Weavers, and I am pretty confident that Matilda's father was indeed George.
From the Yandell mail-list I had this information about James Yandell:
1818-04-14: John Donelson of Wilson Co TN conveyed 135 acres of land on the east side of Stones’ River and on the waters of Suggs Creek in Wilson Co to James Yandell for $325 (Deed Book I, page 338).
Just recently I received the following from the Wilson Co Archives:
Wilson Co TN deed book E
1814-10-07: Indenture between Samuel Allen of Wilson Co TN and George Weaver of Davidson Co TN for $380, a tract of land on Sugg's Creek, the first creek above Stone's Creek, on the east side of Stone's river.
So not only was George the only Weaver in Wilson Co at the time, but he also lived very close to the Yandells, possibly even next door. Given the very close proximity, and the census records I mentioned in my last message, I think it's unlikley that George is not Matilda's father.
One correction to the census records I mentioned: For the 1830 entry I had said that the three extra females must have been the Weavers. On closer inspection, I realized I had missed James Yandell's daughter Mary Ann. She was the female 15-20 listed. So the extra people in James' household were George's widow and her children John and Matilda. I don't know if George's older daughter died or married before 1830. My unfounded suspicion is that she also died, possibly from whatever killed her parents.
I think I also have a good lead on George's father. In Davidson Co on the 1820 census are only two Weavers:
p57 Orin D Weaver 1 M 26-45, 2 F <10, 1 F 16-26 Benjamin Weaver 2 M 10-16, 3 M 16-26, 1 M 45+, 1 F <10, 2 F 10-16, 1 F 16-26, 1 F 45+
These two are almost next door to each other; only one person is between them. I can't make out the third name, but Ancestry reads it as Josiah Leat.
I haven't yet figured out exactly where in Davidson Co these Weavers lived, but they weren't in Nashville, which eliminates much of the county. A very interesting point is that Sugg's Creek crosses the Wilson/Davidson county line. There's a pretty good chance that Benjamin and Orin lived near the county line. Judging from the ages, Benjamin looks very likely to be Orin's father. George could very easily be another of Benjamin's sons. "Benjamin Weaver" will be a difficult name to research, but it sure looks like he could be George's father.
Now if only I could find something about Matilda Pryer. According to one cousin, her grandmother was a Cherokee.