It seems that we are all stymied by John Twombly-Twombly. Most of my research is done on the computer, so limited in some ways. I have lots of data on Hannah, but for John all I have is b: albt 1795, New Hampshire, d: apr 1855 at unknown place. I have chatted with many cousin's and all have about the same info. I would love to learn more about your lineage if you are willing share. Also would love to find out Gray connection, as I have direct lineage to Gray's from Scotland, Maine, Minnestoa. I do have Isaac A Twombley, b: apr 25, 1838, m Elvira Thornton, b abt 1839 ME.
Also have learned that my gggrand parents tombstones list the spelling as Twombley. Whereas I had used Twombly, so when I refer to the name it is now Twombley. Wish I could be of help on John, but I live in Minnesota and it is much to expensive to travel for research, but also think if there were an easy connection, someone would have discovered it by now. Hopt to hear from you again. Rob