Maybe we can help each other.I'm also looking for information on Thomas Furry(Ferry), Sr., who was adopted & went by both surnames, Thomas Furry Jones. His first wife was Eliza O'Connor, my great-great grandmother. They had a son named Thomas (among others) that may be the same one you're looking for. He may have taken the Jones name. I'm looking for info on his brother, Calvin Jones (b.1873), married to Margaret Elizabeth McNeeley. If your Thomas also took the Jones name, then that might be the reason you're having a hard time finding him.
I wonder if we're talking about the same family...if so, please let me know, and keep me posted on your progress.