I think it worthwhile having another look at this Indenture in the light of the new hypotheses.
D.D. 1460. Indenture, dated 1 Aug. 1769, being a lease for a year (so that a grant by release might be made) from 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) to James Lloyd of Mabus, co. Cardigan, esq., of messuages and lands in the said parish of Lledrod, called Strygos otherwise Strygos- fawr, and Twyn y rhose, and late in the tenures of Magdalen Richards, David Richards, Richard David and Thomas Jones.
Having read the will of Richard David it looks as if he died before his time. (Wife is Magdalen).There is no mention of any relatives other than his sons and daughter. This family closely mirrors what we did with the family of the Rev. Morgan Richards; (he died prematurely too when his children were minors). With Richard David dying in 1727, that indenture now reads as if the David Richards mentioned is the son of Thomas, the son of Richard David. This looks like an example of naming within the family that I referred to earlier, notwithstanding that other's may have also named their children David.
Dating the ages is, as usual, fraught with danger but has to be done.
Thomas and David are deceased by 1775 and, as I said earlier, this is the demise area for the children of Richard David. (An example of this - the 3 brothers, Rev. Edward, D1832, Rev. John, D 1833 and James, D1836).
We can pencil in Richard David, born C1680, his son Thomas born C1710, and his son David, born C1735, his children Edward, John, James and Jane being born 1758-1766.
We did the same with David of Ffos ... a David, with a brother, Thomas, at Bryn Issaf.
Your thought please.
Regards from Peter.