Hi,
I have a connection to the Jackson family thru my Thomas family. I also know one or 2 of them and I have family who live in Brownsville. I don't know if I can be of much help in making your Jackson and Lucas family connections, but let me know if you want me to try. My primary connection to Brownsville is thru the Dickinson family and their family lines which include Bell, Johns, Lancaster, Mays, and Dillard.

Linda