Hi, i'm related to Walters family of Conwil. Daniel is a brother to my gg grandfather Joshua. They as you thought are children of Esther and John Walters. Joshua and Daniel with his 2nd wife are buried in Ffynnon Henry near Conwil (with headstone). Other members of family also there. Would like to extend your branch on to my tree if willing. Can fill in some info on some of that line.
Regards
Sharon