The document on Catherine Randolph is at the Williamson County Archives in Franklin, TN. Go to the Wm. Co. TN Gov. Website, under departments chose Archives and there is a request form there with instructions that you can submit.
I think the final amount of Catherine Randolph's estate was $354. or something close to that, I need to look again.
I have a huge book of research on the Ragsdale family, I grew up in the 4th Dist. of Wm. County and I am related to them thru Sarah Ragsdale Johnson. The Ragsdale's and Johnson families are large and are confusing even to the ones of us that grew up in the area.
I have not been to the Maury Co. Archives to get an actual copy of the marriage of John Ragsdale and Polly Randolph. I have only looked at the Marriage Book for Maury County and the record in Ancestry and they have limited info.
If you should happen to find a divorce for Polly Randolph Ragsdale let me know, I did not find one in Williamson County, TN. I will look again just in case, there were several Polly Ragsdale's.