Seeking descendants on the Jones line

I'm looking at the descendants of Robert Thomas Jones Sr and Elizabeth Thornhill in Jefferson County, Tennessee, trying to follow a trail of daughters and granddaughters of Elizabeth in the hopes of locating a present day maternal line descendant to encourage to take a mtDNA test. Of the eleven children of Robert and Elizabeth, seven were girls, so this provides a strong group to research forward.

Starting from the last Jones daughter, Sarah Melissa Jones, her daughter Minnie died without children in 1941. Sarah's sister Mary had three boys. Another sister, Adaline Jones, disappears from the records after the 1870 US Census. Emeline Jones had one son before she passed in 1865.

The focus of possibility points to the first three daughters of Elizabeth: Catherine Jones, Elizabeth Jones and Margaret Caroline Jones. My Mom's results have a lot of DNA matches to descendants of Catherine and Elizabeth, but there's also a few from Margaret Caroline to follow.

AncestryDNA ThruLines.