Hi Roger, we meet again.
Many thanks for your input; as always, it will keep me busy for the rest of the week. Of special interest is the reference to the house at Ystrad Meurig.
The David (Obit 1810), is the son of David. I have a note here for David Senior.
David Richards of Strygosfawr in the parish of Lledrod, CO. Cardigan, gent, (son and heir of Thomas Richards of the same place, gent., deceased by Magdalen his wife).
I have a sneaking suspicion that David Senior is related to John and James's father and now that you have supplied his wife's name, then perhaps I will have more luck. (Letitia-seen but not connected).
This takes David Senior's DoB back to circa 1710 and from that bit of info you can see why, initially, I thought that he could have been one of Edward Richard's undocumented siblings. Edw. B 1714 and his brother, Abraham, B1711.
There is further documentation referring to the transfer of Lledrod Mill...
(Documents concerning Lledrod Mill, Cardiganshire and Ty yn y Porth house and gardens built on the mill premises by 1788, and the houses called Ty Issa, or Wainhelig, or Wainbaby and Tynllan and the Inn and shop called the King’s Arms in the parish of Lledrod, from 1786 to 1926.)
You can see that it includes the property, Ty Issa. This house still exists and there was a Richards there until quite recently, vide the following death notice.
52. Jane Richards, Ty-Isaf, Lledrod 22 July 1959
And so it goes on...and on.
Many thanks for your continuing interest. Peter