Is he John Jones b. 3rd Sept 1795 in Cwmarch, Cilcennin d. 26th April 1870
I suspect he is.
If that is the case then he forms part of an important group of Ceredigion
people who ended up in Tynrhos, and ties in with part of my grandmother's
family who come from this part of Ceredigion (Cardiganshire). Let me know
and I'll send you more information.